6.5
CVE-2026-91767
- EPSS 0.15%
- Veröffentlicht 25.09.2026 20:53:42
- Zuletzt bearbeitet 29.09.2026 21:27:41
- Erkennungen
Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN
php_openssl_matches_wildcard_name() in ext/openssl/xp_ssl.c underflows the length argument passed to memchr() when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP client read up to SIZE_MAX bytes past the end of a heap allocation. The path is reachable from any default client stream, because verify_peer_name is enabled by default.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerPHP Group
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Produkt
PHP
Default Statusunaffected
Version
8.2.*
Version <
8.2.34
Status
affected
Version
8.3.*
Version <
8.3.35
Status
affected
Version
8.4.*
Version <
8.4.26
Status
affected
Version
8.5.*
Version <
8.5.11
Status
affected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. 
Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.15% | 0.039 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| PHP | 6.5 | 2.8 | 3.6 |
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
|
CWE-122 Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
https://github.com/php/php-src/security/advisories/GHSA-xr7j-rvgx-xq5p