High
Security advisory
In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2023-52892
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 04:05 UTC · Revision 1
Source evidence
In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.
osv:CVE-2023-52892
Complete source record
{
"id": "eb52dce2754fc77713aa4de617459f326ebdb32c1e54ada1b5ba59ca60f171e5",
"url": "https://osv.dev/vulnerability/CVE-2023-52892",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2023-52892",
"summary": "In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.",
"evidence": "osv:CVE-2023-52892",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2023-52892",
"aliases": [
"CVE-2023-52892",
"GHSA-ff7q-6vwh-v9m4"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/phpseclib/phpseclib",
"type": "GIT",
"events": [
{
"introduced": "844134df95e42b93ed5506a2d11ca5accda99412"
},
{
"fixed": "db278731472afb1621353b659609b0f9054a1879"
},
{
"introduced": "a74aa9efbe61430fcb60157c8e025a48ec8ff604"
},
{
"fixed": "498e67a0c82bd5791fda9b0dd0f4ec8e8aebb02d"
},
{
"introduced": "fe62c85e0203503231d489af95d0ac053b7d3575"
},
{
"fixed": "33fa69b2514a61138dd48e7a49f99445711e0ad0"
},
{
"fixed": "6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.0"
},
{
"fixed": "1.0.22"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.0.46"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.33"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "33fa69b2514a61138dd48e7a49f99445711e0ad0"
}
],
"source": "REFERENCES_TAG",
"original_tag": "3.0.33"
}
]
}
}
],
"versions": [
"3.0.23",
"2.0.45",
"3.0.22",
"3.0.21",
"2.0.44",
"3.0.20",
"2.0.43",
"2.0.42",
"3.0.19",
"2.0.41",
"3.0.18",
"2.0.40",
"3.0.17",
"2.0.39",
"3.0.16",
"2.0.38",
"3.0.15",
"3.0.14",
"2.0.37",
"3.0.13",
"2.0.36",
"2.0.35",
"3.0.12",
"3.0.11",
"2.0.34",
"3.0.10",
"2.0.33",
"3.0.9",
"2.0.32",
"3.0.8",
"2.0.31",
"3.0.7",
"3.0.6",
"3.0.5",
"3.0.4",
"3.0.3",
"3.0.2",
"3.0.1",
"2.0.30",
"3.0.0",
"2.0.29",
"2.0.28",
"2.0.27",
"2.0.26",
"2.0.25",
"2.0.24",
"2.0.23",
"2.0.22",
"2.0.21",
"2.0.20",
"2.0.19",
"2.0.18",
"2.0.17",
"2.0.16",
"2.0.15",
"2.0.14",
"2.0.13",
"2.0.12",
"2.0.11",
"2.0.10",
"2.0.9",
"2.0.7",
"2.0.6",
"2.0.5",
"2.0.4",
"2.0.3",
"2.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52892.json"
}
}
],
"modified": "2026-10-28T02:30:46.650800508Z",
"provider": "osv",
"references": [
"https://github.com/phpseclib/phpseclib/releases/tag/3.0.33",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52892.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-52892",
"https://github.com/phpseclib/phpseclib/issues/1943",
"https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627",
"https://github.com/x509-name-testing/name_testing_artifacts"
],
"provider_metadata": {
"cna_assigner": "mitre",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52892.json"
}
},
"related_cves": [
{
"value": "CVE-2023-52892",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 514564,
"published_at": "2024-06-27T00:00:00+00:00"
}