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CVE-2026-91769 TLS Hostname Verification Falls Back to CN After SAN Mismatch

🗓️ 25 Sep 2026 20:59:39Reported by phpType 
cvelist
 cvelist
🔗 www.cve.org👁 14 Views

PHP OpenSSL stream peer verification allows impersonation via CN fallback on SAN mismatch.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-91769
1 Jan 197600:00
–alpinelinux
circl
Circl
CVE-2026-91769
24 Sep 202613:35
–circl
cve
CVE
CVE-2026-91769
1 Jan 197600:00
–cve
debian
Debian
[SECURITY] [DSA 6514-1] php8.4 security update
25 Sep 202619:08
–debian
debiancve
Debian CVE
CVE-2026-91769
1 Jan 197600:00
–debiancve
euvd
EUVD
EUVD-2026-87346
25 Sep 202620:59
–euvd
nvd
NVD
CVE-2026-91769
25 Sep 202621:17
–nvd
osv
OSV
DEBIAN-CVE-2026-91769
25 Sep 202621:17
–osv
osv
OSV
UBUNTU-CVE-2026-91769
24 Sep 202600:00
–osv
nessus
Tenable Nessus
PHP 8.2.x < 8.2.34 Multiple Vulnerabilities
24 Sep 202600:00
–nessus
Rows per page
[
  {
    "vendor": "PHP Group",
    "product": "PHP",
    "packageName": "ext-openssl",
    "versions": [
      {
        "status": "affected",
        "version": "8.2.*",
        "lessThan": "8.2.34",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.3.*",
        "lessThan": "8.3.35",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.4.*",
        "lessThan": "8.4.26",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.5.*",
        "lessThan": "8.5.11",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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25 Sep 2026 20:59Current
CVSS 3.14.3
EPSS0.00135
14