CVE-2026-91768
- Source
- https://cve.org/CVERecord?id=CVE-2026-91768
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91768.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-91768
- Aliases
-
- BIT-libphp-2026-91768
- BIT-php-2026-91768
- BIT-php-min-2026-91768
- GHSA-62xp-839h-2637
- Downstream
ALPINE (1)
ALSA (1)
AZL (1)
BELL (1)
CLEANSTART (1)
DEBIAN (1)
ECHO (1)
MGASA (1)
MINI (8)
openSUSE (2)
RHSA (1)
RLSA (1)
SUSE (5)
UBUNTU (1)
- Related
- Published
- 2026-09-25T21:07:30Z
- Modified
- 2026-11-11T02:55:52Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- IPv6 ACL bypass in FastCGI listen.allowed_clients due to partial address comparison (memcmp 12 bytes)
- Details
-
The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 16-byte IPv6 address, so listen.allowed_clients matches on a /96 prefix instead of the exact address. An attacker who can source an address sharing the first 96 bits with an allowed one passes the check and reaches the FastCGI endpoint.
- Database specific
{ "cna_assigner": "php", "cwe_ids": [ "CWE-1023" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91768.json" }- References
Affected packages
Git / github.com/php/php-src
Affected ranges
- Type
- GIT
- Repo
- https://github.com/php/php-src
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "range": [ { "introduced": "8.2.0" }, { "fixed": "8.2.34" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "range": [ { "introduced": "8.3.0" }, { "fixed": "8.3.35" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "range": [ { "introduced": "8.4.0" }, { "fixed": "8.4.26" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "range": [ { "introduced": "8.5.0" }, { "fixed": "8.5.11" } ], "source": "CPE_RANGE" } ] }