CVE-2026-15747 Affecting perl-Mojolicious package, versions <9.370.0-150700.3.3.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.25% (15th percentile)

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  • Snyk IDSNYK-SLES157-PERLMOJOLICIOUS-19854168
  • published16 Sept 2026
  • disclosed14 Sept 2026

Introduced: 14 Sep 2026

CVE-2026-15747  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 perl-Mojolicious to version 9.370.0-150700.3.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl-Mojolicious package and not the perl-Mojolicious package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

Mojolicious versions from 4.59 before 9.48 for Perl expose a stable representation of the session CSRF token to a BREACH compression oracle.

_csrf_token generates and caches one token per session and returns the same value on every call, and _csrf_field places that value in a hidden csrf_token input. When a response carrying the token also echoes attacker-controlled input and is gzip-compressed, the chosen values and the resulting compressed lengths form a BREACH oracle.

An attacker able to query it can recover the token and pass csrf_protect validation.

CVSS Base Scores

version 3.1