CVE-2026-91769 Affecting php-pecl-xdebug-debugsource package, versions <0:2.9.5-1.module+el8.10.0+1604+6558efc7


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-ROCKY8-PHPPECLXDEBUGDEBUGSOURCE-21442697
  • published23 Oct 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

NewCVE-2026-91769  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 php-pecl-xdebug-debugsource to version 0:2.9.5-1.module+el8.10.0+1604+6558efc7 or higher.
This issue was patched in RLSA-2026:87080.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-pecl-xdebug-debugsource package and not the php-pecl-xdebug-debugsource 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