HighFix available
edk2, edk2-hwe and 3 more products — security advisory
Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector (IV) is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV supplied by the caller, resulting in (key, nonce) reuse and loss of confidentiality. If the same code path is used to compute the authentication tag, the tag depends only on the (key, IV) pair and not on the plaintext or ciphertext, allowing universal forgery of arbitrary ciphertext from a single captured message. OpenSSL provides two ways to drive a cipher: the documented streaming interface (EVP_CipherUpdate / EVP_CipherFinal_ex) and a lower-level one-shot, EVP_Cipher(), whose documentation explicitly recommends against use by applications in favour of EVP_CipherUpdate() and EVP_CipherFinal_ex(). The OCB provider's streaming handler flushes the application-supplied IV into the OCB context before processing data; the one-shot handler did not. Every call to EVP_Cipher() on an AES-OCB context therefore ran with the all-zero key-derived offset state left by cipher initialisation, regardless of the caller's IV. If EVP_EncryptFinal_ex() is subsequently used to obtain the authentication tag, the deferred IV setup runs at that point and clears the running checksum that should have been accumulated over the plaintext. The resulting tag is a function of (key, IV) only and verifies against an
- Products
- edk2, edk2-hwe, nodejs, openssl, openssl-fips
- Affected versions
- 1.1.1l-1ubuntu1, 12.22.5~dfsg-5ubuntu1, 12.22.7~dfsg-2ubuntu1, 12.22.7~dfsg-2ubuntu3, 12.22.9~dfsg-1ubuntu2, 12.22.9~dfsg-1ubuntu3, 12.22.9~dfsg-1ubuntu3.1, 12.22.9~dfsg-1ubuntu3.2, 12.22.9~dfsg-1ubuntu3.3, 12.22.9~dfsg-1ubuntu3.4, 12.22.9~dfsg-1ubuntu3.5, 12.22.9~dfsg-1ubuntu3.6, 12.22.9~dfsg-1ubuntu3.6+esm2, 2023.05-2, 2023.11-2, 2023.11-3, 2023.11-4, 2023.11-5, 2023.11-6, 2023.11-8, 2024.02-1, 2024.02-2, 2024.02-2ubuntu0.1, 2024.02-2ubuntu0.10, 2024.02-2ubuntu0.3, 2024.02-2ubuntu0.4, 2024.02-2ubuntu0.5, 2024.02-2ubuntu0.6, 2024.02-2ubuntu0.7, 2024.02-2ubuntu0.8, 2024.02-2ubuntu0.9, 2025.02-3ubuntu2, 2025.02-8, 2025.02-8ubuntu1, 2025.02-8ubuntu2, 2025.02-8ubuntu3, 2025.02-8ubuntu3.1, 2025.02-8ubuntu3.2, 2025.11-3ubuntu6, 2025.11-3ubuntu7, 2025.11-3ubuntu7.2, 2025.11-3ubuntu7.3, 2025.11-3ubuntu8, 2025.11-3ubuntu8.2, 2025.11-3ubuntu9, 2026.05-2ubuntu1, 2026.05-2ubuntu2, 2026.05-2ubuntu3, 3.0.0-1ubuntu1, 3.0.1-0ubuntu1, 3.0.10-1ubuntu2, 3.0.10-1ubuntu2.1, 3.0.10-1ubuntu3, 3.0.10-1ubuntu4, 3.0.13-0ubuntu2, 3.0.13-0ubuntu3, 3.0.13-0ubuntu3+Fips1, 3.0.13-0ubuntu3.1, 3.0.13-0ubuntu3.2, 3.0.13-0ubuntu3.3, 3.0.13-0ubuntu3.4, 3.0.13-0ubuntu3.5, 3.0.13-0ubuntu3.6, 3.0.13-0ubuntu3.6+Fips1, 3.0.13-0ubuntu3.7, 3.0.13-0ubuntu3.9, 3.0.2-0ubuntu1, 3.0.2-0ubuntu1.1, 3.0.2-0ubuntu1.10, 3.0.2-0ubuntu1.10+Fips1, 3.0.2-0ubuntu1.12, 3.0.2-0ubuntu1.12+Fips1, 3.0.2-0ubuntu1.13, 3.0.2-0ubuntu1.14, 3.0.2-0ubuntu1.14+Fips1, 3.0.2-0ubuntu1.15, 3.0.2-0ubuntu1.15+Fips1, 3.0.2-0ubuntu1.16, 3.0.2-0ubuntu1.16+Fips1, 3.0.2-0ubuntu1.17, 3.0.2-0ubuntu1.17+Fips1, 3.0.2-0ubuntu1.18, 3.0.2-0ubuntu1.18+Fips1, 3.0.2-0ubuntu1.19, 3.0.2-0ubuntu1.19+Fips1, 3.0.2-0ubuntu1.2, 3.0.2-0ubuntu1.20, 3.0.2-0ubuntu1.20+Fips1, 3.0.2-0ubuntu1.21, 3.0.2-0ubuntu1.21+Fips1, 3.0.2-0ubuntu1.23, 3.0.2-0ubuntu1.23+Fips1, 3.0.2-0ubuntu1.4, 3.0.2-0ubuntu1.5, 3.0.2-0ubuntu1.6, 3.0.2-0ubuntu1.7, 3.0.2-0ubuntu1.8, 3.0.2-0ubuntu1.9, 3.0.5-0ubuntu0.1+Fips2.1, 3.0.5-0ubuntu0.2+Fips1, 3.4.1-1ubuntu3, 3.5.0-2ubuntu1, 3.5.2-1ubuntu1, 3.5.3-1ubuntu2, 3.5.3-1ubuntu3, 3.5.3-1ubuntu3.3, 3.5.5-1ubuntu1, 3.5.5-1ubuntu3
- Fixed versions
- 3.0.13-0ubuntu3.11, 3.0.13-0ubuntu3.12+Fips1, 3.0.2-0ubuntu1.25, 3.0.2-0ubuntu1.25+Fips1, 3.5.3-1ubuntu3.4, 3.5.5-1ubuntu3.2
- CVEs
- CVE-2026-45445
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:14 UTC · Revision 1
Source evidence
Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector (IV) is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV supplied by the caller, resulting in (key, nonce) reuse and loss of confidentiality. If the same code path is used to compute the authentication tag, the tag depends only on the (key, IV) pair and not on the plaintext or ciphertext, allowing universal forgery of arbitrary ciphertext from a single captured message. OpenSSL provides two ways to drive a cipher: the documented streaming interface (EVP_CipherUpdate / EVP_CipherFinal_ex) and a lower-level one-shot, EVP_Cipher(), whose documentation explicitly recommends against use by applications in favour of EVP_CipherUpdate() and EVP_CipherFinal_ex(). The OCB provider's streaming handler flushes the application-supplied IV into the OCB context before processing data; the one-shot handler did not. Every call to EVP_Cipher() on an AES-OCB context therefore ran with the all-zero key-derived offset state left by cipher initialisation, regardless of the caller's IV. If EVP_EncryptFinal_ex() is subsequently used to obtain the authentication tag, the deferred IV setup runs at that point and clears the running checksum that should have been accumulated over the plaintext. The resulting tag is a function of (key, IV) only and verifies against an
osv:UBUNTU-CVE-2026-45445
openssl
Fixed versions: 3.0.2-0ubuntu1.25
nodejs
Fixed versions: Not specified
openssl
Fixed versions: Not specified
openssl-fips
Fixed versions: Not specified
openssl
Fixed versions: 3.0.2-0ubuntu1.25+Fips1
openssl-fips
Fixed versions: Not specified
edk2
Fixed versions: Not specified
openssl
Fixed versions: 3.0.13-0ubuntu3.11
openssl-fips
Fixed versions: 3.0.13-0ubuntu3.12+Fips1
edk2
Fixed versions: Not specified
openssl
Fixed versions: 3.5.3-1ubuntu3.4
edk2
Fixed versions: Not specified
edk2-hwe
Fixed versions: Not specified
edk2
Fixed versions: Not specified
edk2-hwe
Fixed versions: Not specified
openssl
Fixed versions: 3.5.5-1ubuntu3.2
Complete source record
{
"id": "5a2a97cf9a363426e26d23f688c30e3b0a302b750b26f6fc2ee7731d34e94377",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-45445",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-45445",
"summary": "Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector (IV) is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV supplied by the caller, resulting in (key, nonce) reuse and loss of confidentiality. If the same code path is used to compute the authentication tag, the tag depends only on the (key, IV) pair and not on the plaintext or ciphertext, allowing universal forgery of arbitrary ciphertext from a single captured message. OpenSSL provides two ways to drive a cipher: the documented streaming interface (EVP_CipherUpdate / EVP_CipherFinal_ex) and a lower-level one-shot, EVP_Cipher(), whose documentation explicitly recommends against use by applications in favour of EVP_CipherUpdate() and EVP_CipherFinal_ex(). The OCB provider's streaming handler flushes the application-supplied IV into the OCB context before processing data; the one-shot handler did not. Every call to EVP_Cipher() on an AES-OCB context therefore ran with the all-zero key-derived offset state left by cipher initialisation, regardless of the caller's IV. If EVP_EncryptFinal_ex() is subsequently used to obtain the authentication tag, the deferred IV setup runs at that point and clears the running checksum that should have been accumulated over the plaintext. The resulting tag is a function of (key, IV) only and verifies against an",
"evidence": "osv:UBUNTU-CVE-2026-45445",
"products": [
{
"name": {
"value": "openssl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.2-0ubuntu1.25",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "1.1.1l-1ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.0-1ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.1-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.2",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.4",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.5",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.6",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.7",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.8",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.9",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.10",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.12",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.13",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.14",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.15",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.16",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.17",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.18",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.19",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.20",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.21",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.2-0ubuntu1.23",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "nodejs",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "12.22.5~dfsg-5ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.7~dfsg-2ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.7~dfsg-2ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3.1",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3.2",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3.3",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3.4",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3.5",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3.6",
"evidence": "/affected/1/versions"
},
{
"value": "12.22.9~dfsg-1ubuntu3.6+esm2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "openssl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.0.2-0ubuntu1.10+Fips1",
"evidence": "/affected/2/versions"
},
{
"value": "3.0.2-0ubuntu1.12+Fips1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "openssl-fips",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.0.5-0ubuntu0.1+Fips2.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "openssl",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.2-0ubuntu1.25+Fips1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "3.0.2-0ubuntu1.10+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.12+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.14+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.15+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.16+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.17+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.18+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.19+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.20+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.21+Fips1",
"evidence": "/affected/4/versions"
},
{
"value": "3.0.2-0ubuntu1.23+Fips1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "openssl-fips",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.0.5-0ubuntu0.1+Fips2.1",
"evidence": "/affected/5/versions"
},
{
"value": "3.0.5-0ubuntu0.2+Fips1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "edk2",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2023.05-2",
"evidence": "/affected/6/versions"
},
{
"value": "2023.11-2",
"evidence": "/affected/6/versions"
},
{
"value": "2023.11-3",
"evidence": "/affected/6/versions"
},
{
"value": "2023.11-4",
"evidence": "/affected/6/versions"
},
{
"value": "2023.11-5",
"evidence": "/affected/6/versions"
},
{
"value": "2023.11-6",
"evidence": "/affected/6/versions"
},
{
"value": "2023.11-8",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-1",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.1",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.3",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.4",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.5",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.6",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.7",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.8",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.9",
"evidence": "/affected/6/versions"
},
{
"value": "2024.02-2ubuntu0.10",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "openssl",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.13-0ubuntu3.11",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": [
{
"value": "3.0.10-1ubuntu2",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.10-1ubuntu2.1",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.10-1ubuntu3",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.10-1ubuntu4",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu2",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.1",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.2",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.3",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.4",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.5",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.6",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.7",
"evidence": "/affected/7/versions"
},
{
"value": "3.0.13-0ubuntu3.9",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "openssl-fips",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.13-0ubuntu3.12+Fips1",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": [
{
"value": "3.0.13-0ubuntu3+Fips1",
"evidence": "/affected/8/versions"
},
{
"value": "3.0.13-0ubuntu3.6+Fips1",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "edk2",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2025.02-3ubuntu2",
"evidence": "/affected/9/versions"
},
{
"value": "2025.02-8",
"evidence": "/affected/9/versions"
},
{
"value": "2025.02-8ubuntu1",
"evidence": "/affected/9/versions"
},
{
"value": "2025.02-8ubuntu2",
"evidence": "/affected/9/versions"
},
{
"value": "2025.02-8ubuntu3",
"evidence": "/affected/9/versions"
},
{
"value": "2025.02-8ubuntu3.1",
"evidence": "/affected/9/versions"
},
{
"value": "2025.02-8ubuntu3.2",
"evidence": "/affected/9/versions"
}
]
},
{
"name": {
"value": "openssl",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.5.3-1ubuntu3.4",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": [
{
"value": "3.4.1-1ubuntu3",
"evidence": "/affected/10/versions"
},
{
"value": "3.5.0-2ubuntu1",
"evidence": "/affected/10/versions"
},
{
"value": "3.5.2-1ubuntu1",
"evidence": "/affected/10/versions"
},
{
"value": "3.5.3-1ubuntu2",
"evidence": "/affected/10/versions"
},
{
"value": "3.5.3-1ubuntu3",
"evidence": "/affected/10/versions"
},
{
"value": "3.5.3-1ubuntu3.3",
"evidence": "/affected/10/versions"
}
]
},
{
"name": {
"value": "edk2",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2025.11-3ubuntu7",
"evidence": "/affected/11/versions"
},
{
"value": "2025.11-3ubuntu8",
"evidence": "/affected/11/versions"
},
{
"value": "2026.05-2ubuntu1",
"evidence": "/affected/11/versions"
},
{
"value": "2026.05-2ubuntu2",
"evidence": "/affected/11/versions"
},
{
"value": "2026.05-2ubuntu3",
"evidence": "/affected/11/versions"
}
]
},
{
"name": {
"value": "edk2-hwe",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2025.11-3ubuntu8",
"evidence": "/affected/12/versions"
},
{
"value": "2025.11-3ubuntu9",
"evidence": "/affected/12/versions"
},
{
"value": "2026.05-2ubuntu1",
"evidence": "/affected/12/versions"
},
{
"value": "2026.05-2ubuntu2",
"evidence": "/affected/12/versions"
},
{
"value": "2026.05-2ubuntu3",
"evidence": "/affected/12/versions"
}
]
},
{
"name": {
"value": "edk2",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2025.02-8ubuntu3",
"evidence": "/affected/13/versions"
},
{
"value": "2025.11-3ubuntu6",
"evidence": "/affected/13/versions"
},
{
"value": "2025.11-3ubuntu7",
"evidence": "/affected/13/versions"
},
{
"value": "2025.11-3ubuntu7.2",
"evidence": "/affected/13/versions"
},
{
"value": "2025.11-3ubuntu7.3",
"evidence": "/affected/13/versions"
}
]
},
{
"name": {
"value": "edk2-hwe",
"evidence": "/affected/14/package/name"
},
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"fixed_versions": [],
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"provider": "osv",
"upstream": [
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"https://ubuntu.com/security/CVE-2026-45445",
"https://www.cve.org/CVERecord?id=CVE-2026-45445",
"https://openssl-library.org/news/secadv/20260609.txt",
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"evidence": "/upstream"
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"source_id": "core-osv",
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"published_at": "2026-06-09T00:00:00+00:00"
}