DEBIAN-CVE-2026-89078: ruby3.3 security update

DEBIAN-CVE-2026-89078, released September 24, 2026, fixes 1 CVE in ruby3.3 (version 3.3.13-0+deb13u1). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.9

Base score, 0 to 10

Highest EPSS

0.0052

44th percentile

Fixed package versions

Product	Release	Fixed in
ruby3.3	Debian 13.5 (trixie)	3.3.13-0+deb13u1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-89078	ruby3.3: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, an...	9.9	0.0052	None reported

Also fixes CVE-2026-89078

ALAS2023-2026-3413
ruby3.4, ruby3.4-bundled-gems, ruby3.4-bundled-gems-debuginfo and 31 more on amzn 2023
ELSA-2026-96235
ruby, ruby-bundled-gems, ruby-default-gems and 21 more on ol 10
ALSA-2026:96067
ruby, ruby-default-gems, ruby-devel and 19 more on almalinux 9
RHSA-2026:96235
ruby on RHEL 10
ALSA-2026:96068
rubygem-mysql2, rubygem-mysql2-doc, rubygem-pg and 1 more on almalinux 9
RLSA-2026:96068
rubygem-mysql2, rubygem-pg on rocky 9
RHSA-2026:96068
ruby, ruby-bundled-gems, ruby-default-gems and 25 more on RHEL 9

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2026-89078

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