CVE-2026-110264

NameCVE-2026-110264
DescriptionAn issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0.10, 19.1 before 19.1.9, 19.2 before 19.2.9, 19.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server due to integer overflow when compiling a specially crafted regular expression.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6614-1
Debian Bugs1152513

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ruby3.1 (PTS)bookworm, bookworm (security)3.1.2-7+deb12u1vulnerable
ruby3.3 (PTS)trixie3.3.8-2vulnerable
trixie (security)3.3.13-0+deb13u1fixed
forky, sid3.3.8-2.2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby3.1source(unstable)(unfixed)
ruby3.3sourcetrixie3.3.13-0+deb13u1DSA-6614-1
ruby3.3source(unstable)(unfixed)1152513

Notes

https://github.com/ruby/ruby/pull/16801
Fixed by: https://github.com/ruby/ruby/commit/493d26dcdea8b2f0ac5d28e057b401bc809e7fae (v4.1.0-preview1)
Fixed by: https://github.com/ruby/ruby/commit/63eda2681e24cdf9fbe45fdd8a3d8866f4f59878 (v3_3_13)
https://www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves/

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