Multiple vulnerabilities in GitLab (August 13, 2026)

unknownCVE-2026-19228 CVE-2026-18433 CVE-2026-15217 CVE-2026-4879 CVE-2026-16627 CVE-2026-15423

Multiple vulnerabilities have been discovered in GitLab. Some of them allow an attacker to cause privilege escalation, remote denial of service and data confidentiality breach.

CSIRTS triage

vendor: GitLab product: GitLab Privilege escalation Denial of service Information disclosure

What: Multiple vulnerabilities in GitLab allow privilege escalation, remote denial of service, and data confidentiality breaches.
Who is affected: GitLab deployments across affected versions.
Urgency: High; multiple attack vectors including privilege escalation and data theft.
Action: Upgrade GitLab to patched versions addressing CVE-2026-19228, CVE-2026-18433, CVE-2026-15217, CVE-2026-4879, CVE-2026-16627, CVE-2026-15423, CVE-2026-6821, and CVE-2026-18244.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-08-13
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1013/

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-192280.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-184330.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-152170.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-48790.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-166270.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-154230.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-68210.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-182440.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-94860.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-74270.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-19228	coverage & exploitation status	NVD · CVE.org
CVE-2026-18433	coverage & exploitation status	NVD · CVE.org
CVE-2026-15217	coverage & exploitation status	NVD · CVE.org
CVE-2026-4879	coverage & exploitation status	NVD · CVE.org
CVE-2026-16627	coverage & exploitation status	NVD · CVE.org
CVE-2026-15423	coverage & exploitation status	NVD · CVE.org
CVE-2026-6821	coverage & exploitation status	NVD · CVE.org
CVE-2026-18244	coverage & exploitation status	NVD · CVE.org
CVE-2025-9486	coverage & exploitation status	NVD · CVE.org
CVE-2026-7427	coverage & exploitation status	NVD · CVE.org
CVE-2026-8667	coverage & exploitation status	NVD · CVE.org
CVE-2026-15216	coverage & exploitation status	NVD · CVE.org
CVE-2026-16494	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for GitLab

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownGitLab security advisory (AV26-814)cccs · 2026-08-13
unknownNCSC-2026-0297 [1.00] [M/H] Vulnerabilities patched in GitLab Enterprise Edition and Community Editionncsc-nl · 2026-08-13
high[NEW] [high] GitLab: Multiple vulnerabilitiescert-bund · 2026-08-13
mediumCVE-2026-6821: GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.0.6, 19.…nvd · 2026-08-12
mediumCVE-2026-4879: GitLab has remediated an issue in GitLab EE affecting all versions from 16.0 before 19.0.6, 19.…nvd · 2026-08-12
highCVE-2026-19228: GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and…nvd · 2026-08-12