UnratedFix available
Fix CVE(s): CVE-2026-13321, CVE-2026-19666, CVE-2026-80274
Type: advisorySources: OSV
* SECURITY UPDATE: DNSSEC validation bypass via an out-of-zone NSEC Next Domain Name - debian/patches/CVE-2026-13321.patch: reject an NSEC RRset whose next owner name is not a subdomain of the RRSIG signer name in dns_dnssec_verify3() in lib/dns/dnssec.c. - CVE-2026-13321 * SECURITY UPDATE: assertion failure with dns64 and break-dnssec - debian/patches/CVE-2026-19666.patch: clear the noqname alias on the DNS64 filter64 path in query_find() in bin/named/query.c; add the upstream dns64 system test for a partially excluded wildcard AAAA. - CVE-2026-19666 * SECURITY UPDATE: crash on wildcard answers carrying both NSEC and NSEC3 proofs - debian/patches/CVE-2026-80274.patch: record the denial type the validator accepted and use it when caching and serving the NOQNAME proof in lib/dns/validator.c, lib/dns/resolver.c and lib/dns/rdatalist.c; adds dns_rdataset_addnoqnametype() so dns_rdataset_addnoqname() keeps its signature. - CVE-2026-80274 * Add root KSK-2024 (key tag 38696) trust anchor to bind.keys; fresh installs could not validate the root zone after the 2026-10-11 rollover - debian/patches/update_keys.patch: add the 38696 initial-key to bind.keys and the generated bind.keys.h next to the existing 20326 entry (upstream 609bf35075, carried as initial-key because 9.10 has no initial-ds).
- Products
- bind9, bind9-doc, bind9-host, bind9utils, dnsutils, host, libbind-dev, libbind-export-dev, libbind9-140, libdns-export162, libdns162, libirs-export141, libirs141, libisc-export160, libisc160, libisccc-export140, libisccc140, libisccfg-export140, libisccfg140, liblwres141, lwresd
- Affected versions
- Not specified
- Fixed versions
- 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
- CVEs
- CVE-2026-13321, CVE-2026-19666, CVE-2026-80274
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:40 UTC · Revision 1
Source evidence
Fix CVE(s): CVE-2026-13321, CVE-2026-19666, CVE-2026-80274
core-osv · Original sourcePublished 15 Oct 2026, 16:53 UTC
* SECURITY UPDATE: DNSSEC validation bypass via an out-of-zone NSEC Next Domain Name - debian/patches/CVE-2026-13321.patch: reject an NSEC RRset whose next owner name is not a subdomain of the RRSIG signer name in dns_dnssec_verify3() in lib/dns/dnssec.c. - CVE-2026-13321 * SECURITY UPDATE: assertion failure with dns64 and break-dnssec - debian/patches/CVE-2026-19666.patch: clear the noqname alias on the DNS64 filter64 path in query_find() in bin/named/query.c; add the upstream dns64 system test for a partially excluded wildcard AAAA. - CVE-2026-19666 * SECURITY UPDATE: crash on wildcard answers carrying both NSEC and NSEC3 proofs - debian/patches/CVE-2026-80274.patch: record the denial type the validator accepted and use it when caching and serving the NOQNAME proof in lib/dns/validator.c, lib/dns/resolver.c and lib/dns/rdatalist.c; adds dns_rdataset_addnoqnametype() so dns_rdataset_addnoqname() keeps its signature. - CVE-2026-80274 * Add root KSK-2024 (key tag 38696) trust anchor to bind.keys; fresh installs could not validate the root zone after the 2026-10-11 rollover - debian/patches/update_keys.patch: add the 38696 initial-key to bind.keys and the generated bind.keys.h next to the existing 20326 entry (upstream 609bf35075, carried as initial-key because 9.10 has no initial-ds).
osv:CLSA-2026-1792083184
bind9
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
bind9-doc
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
bind9-host
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
bind9utils
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
dnsutils
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
host
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libbind-dev
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libbind-export-dev
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libbind9-140
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libdns-export162
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libdns162
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libirs-export141
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libirs141
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libisc-export160
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libisc160
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libisccc-export140
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libisccc140
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libisccfg-export140
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
libisccfg140
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
liblwres141
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
lwresd
Fixed versions: 2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14
Complete source record
{
"id": "5960872e63bf0f5825c5065cad803ab0cec954562d0bf7c0035dcab6950cb7ac",
"url": "https://osv.dev/vulnerability/CLSA-2026-1792083184",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-13321, CVE-2026-19666, CVE-2026-80274",
"summary": "* SECURITY UPDATE: DNSSEC validation bypass via an out-of-zone NSEC Next Domain Name - debian/patches/CVE-2026-13321.patch: reject an NSEC RRset whose next owner name is not a subdomain of the RRSIG signer name in dns_dnssec_verify3() in lib/dns/dnssec.c. - CVE-2026-13321 * SECURITY UPDATE: assertion failure with dns64 and break-dnssec - debian/patches/CVE-2026-19666.patch: clear the noqname alias on the DNS64 filter64 path in query_find() in bin/named/query.c; add the upstream dns64 system test for a partially excluded wildcard AAAA. - CVE-2026-19666 * SECURITY UPDATE: crash on wildcard answers carrying both NSEC and NSEC3 proofs - debian/patches/CVE-2026-80274.patch: record the denial type the validator accepted and use it when caching and serving the NOQNAME proof in lib/dns/validator.c, lib/dns/resolver.c and lib/dns/rdatalist.c; adds dns_rdataset_addnoqnametype() so dns_rdataset_addnoqname() keeps its signature. - CVE-2026-80274 * Add root KSK-2024 (key tag 38696) trust anchor to bind.keys; fresh installs could not validate the root zone after the 2026-10-11 rollover - debian/patches/update_keys.patch: add the 38696 initial-key to bind.keys and the generated bind.keys.h next to the existing 20326 entry (upstream 609bf35075, carried as initial-key because 9.10 has no initial-ds).",
"evidence": "osv:CLSA-2026-1792083184",
"products": [
{
"name": {
"value": "bind9",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "bind9-doc",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "bind9-host",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "bind9utils",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dnsutils",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "host",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libbind-dev",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libbind-export-dev",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libbind9-140",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libdns-export162",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libdns162",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libirs-export141",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/11/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libirs141",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/12/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libisc-export160",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/13/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libisc160",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/14/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libisccc-export140",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/15/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libisccc140",
"evidence": "/affected/16/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/16/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libisccfg-export140",
"evidence": "/affected/17/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/17/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libisccfg140",
"evidence": "/affected/18/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/18/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "liblwres141",
"evidence": "/affected/19/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/19/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "lwresd",
"evidence": "/affected/20/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14",
"evidence": "/affected/20/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1792083184",
"aliases": [
"CLSA-2026-1792083184"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "bind9",
"purl": "pkg:deb/tuxcare/bind9?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "bind9-doc",
"purl": "pkg:deb/tuxcare/bind9-doc?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "bind9-host",
"purl": "pkg:deb/tuxcare/bind9-host?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "bind9utils",
"purl": "pkg:deb/tuxcare/bind9utils?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "dnsutils",
"purl": "pkg:deb/tuxcare/dnsutils?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "host",
"purl": "pkg:deb/tuxcare/host?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "libbind-dev",
"purl": "pkg:deb/tuxcare/libbind-dev?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "libbind-export-dev",
"purl": "pkg:deb/tuxcare/libbind-export-dev?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "libbind9-140",
"purl": "pkg:deb/tuxcare/libbind9-140?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "libdns-export162",
"purl": "pkg:deb/tuxcare/libdns-export162?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "libdns162",
"purl": "pkg:deb/tuxcare/libdns162?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "libirs-export141",
"purl": "pkg:deb/tuxcare/libirs-export141?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
"package": {
"name": "libirs141",
"purl": "pkg:deb/tuxcare/libirs141?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1792083184.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.10.3.dfsg.P4-8ubuntu1.19+tuxcare.els14"
}
]
}
],
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],
"package": {
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"purl": "pkg:deb/tuxcare/liblwres141?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
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},
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],
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"purl": "pkg:deb/tuxcare/lwresd?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
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}
],
"modified": "2026-10-26T09:32:03.018030406Z",
"provider": "osv",
"upstream": [
"CVE-2026-13321",
"CVE-2026-19666",
"CVE-2026-80274"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu16.04els/CLSA-2026-1792083184.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-13321",
"https://nvd.nist.gov/vuln/detail/CVE-2026-19666",
"https://nvd.nist.gov/vuln/detail/CVE-2026-80274"
]
},
"related_cves": [
{
"value": "CVE-2026-13321",
"evidence": "/upstream"
},
{
"value": "CVE-2026-19666",
"evidence": "/upstream"
},
{
"value": "CVE-2026-80274",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449495,
"published_at": "2026-10-15T16:53:16+00:00"
}