Authenticated remote code execution in widely used self-hosted GitLab CE/EE via CI config; affects many orgs' source/control infrastructure and requires org-wide action.
CVE-2026-93577
Authenticated RCE in GitLab CI via regex integer overflow
Is CVE-2026-93577 being exploited?
Not confirmed. CVE-2026-93577 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-93577?
CVE-2026-93577 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-93577?
Yes. A fix has been recorded for CVE-2026-93577. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-93577 affect?
CVE-2026-93577 affects GitLab CE/EE 19.2 before 19.2.7, GitLab CE/EE 19.3 before 19.3.3, GitLab CE/EE 19.4 before 19.4.1, Self-hosted GitLab servers using CI/CD. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-93577?
Upgrade GitLab to fixed versions immediately; review CI configs and tokens
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated user can trigger integer overflow compiling a crafted regex in CI, leading to arbitrary code execution on the GitLab server.
Immediate action required
- affected>= 19.2 and < 19.2.7
- affected>= 19.3 and < 19.3.3
- affected>= 19.4 and < 19.4.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.