CVE-2026-91769 Affecting php-xmlrpc package, versions <0:7.4.33-8.module+el8.10.0+40393+c071e357


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-ROCKY8-PHPXMLRPC-21442782
  • published23 Oct 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

CVE-2026-91769  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 php-xmlrpc to version 0:7.4.33-8.module+el8.10.0+40393+c071e357 or higher.
This issue was patched in RLSA-2026:87080.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-xmlrpc package and not the php-xmlrpc package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN was still accepted when its CN matched the requested peer_name. A certificate trusted by the client for one name can therefore be used to impersonate another.

CVSS Base Scores

version 3.1