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Exploitation reportedNot in CISA KEV yetFix available

CVE-2026-19478

Exploitation reported by one source. First attested on 2026-08-21 by GCVE · kevintel.

  • Published2026-08-17
  • Fixed in19.2.4 · 19.1.6 · 19.0.8 · 18.11.11
  • WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 that under certain conditions could allow an unauthenticated user to remotely modify or delete public projects and user data via a GraphQL directive.

Timeline

dates in UTC
  1. 2026-08-1720:16CVE publishedNVD
  2. 2026-08-2107:04Listed as exploited by GCVEGCVE
  3. 2026-08-2107:04Exploitation first reportedGCVE

Versions per branch

NVD · OSV
GitLab
BranchAffectedFixed in
19.2≥ 19.2.0, < 19.2.419.2.4
19.1≥ 19.1.0, < 19.1.619.1.6
19.0≥ 19.0.0, < 19.0.819.0.8
18.x≥ 18.2.0, < 18.11.1118.11.11

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitLab, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • GitLabother versions: not affected
    Affected
    • ≥ 18.2, < 18.11.11fixed in 18.11.11semver
    • ≥ 19.0, < 19.0.8fixed in 19.0.8semver
    • ≥ 19.1, < 19.1.6fixed in 19.1.6semver
    • ≥ 19.2, < 19.2.4fixed in 19.2.4semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-17

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • gitlab-rails-19.1MinimOSall versions · fixed in 19.1.6-r0
  • gitlab-rails-19.2MinimOSall versions · fixed in 19.2.4-r0

Full record on NVD

Fix

  1. Update GitLab to 19.2.4 · 19.1.6 · 19.0.8 · 18.11.11

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
2026-08-17
Last Modified
2026-09-02
NVD status
Analyzed
GitHub Advisory
GHSA-6whr-xjjm-6pf8

Frequently asked questions

What is CVE-2026-19478?

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 that under certain conditions could allow an unauthenticated user to remotely modify or delete public projects and user data via a GraphQL directive.

Is CVE-2026-19478 actively exploited?

Active exploitation of CVE-2026-19478 has not been confirmed. Its EPSS score was 2.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-19478?

CVE-2026-19478 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

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Sources for this record