GitLab CE/EE is widely used; unauthenticated remote modification/deletion of repos/user data can disrupt development and supply chain.
CVE-2026-19478
Unauthenticated remote modify/delete of GitLab public projects via GraphQL directive.
Is CVE-2026-19478 being exploited?
Not confirmed. CVE-2026-19478 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. EPSS currently estimates a 5.8% probability of exploitation in the next 30 days.
How severe is CVE-2026-19478?
CVE-2026-19478 is rated Critical with a CVSS score of 9.4. 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-2026-19478?
Yes. A fix has been recorded for CVE-2026-19478. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-19478 affect?
CVE-2026-19478 affects GitLab CE/EE: 18.2 before 18.11.11, GitLab CE/EE: 19.0 before 19.0.8, GitLab CE/EE: 19.1 before 19.1.6, GitLab CE/EE: 19.2 before 19.2.4. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-19478?
Apply vendor patches immediately and restrict public project/GraphQL access until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can remotely modify or delete public projects and user data via a GraphQL directive, risking code/data loss and supply-chain disruption.
Immediate action required
- affected>= 18.2 and < 18.11.11
- affected>= 19.0 and < 19.0.8
- affected>= 19.1 and < 19.1.6
- affected>= 19.2 and < 19.2.4
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.