[NEW] [high] GitLab: Multiple vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities in GitLab allow attackers to perform cross-site scripting, bypass security measures, escalate privileges, disclose information, manipulate data, or cause denial of service.

Who is affected

GitLab deployments are affected; specific versions not stated.

Urgency

High severity requires prompt patching; currently not exploited but multiple attack vectors present.

Action

Update GitLab to patched version addressing CVE-2025-9486, CVE-2026-15216, CVE-2026-15217, CVE-2026-15423, CVE-2026-16494, CVE-2026-16627, CVE-2026-18244, and CVE-2026-18433.

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

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

high

Published

2026-08-13

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2805

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-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-2026-152160.26% 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-2026-152170.26% 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-2026-154230.26% 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-2026-164940.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% 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-2026-182440.21% 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-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-2026-192280.23% 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-2026-48790.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

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

• unknownNCSC-2026-0297 [1.00] [M/H] Vulnerabilities patched in GitLab Enterprise Edition and Community Editionncsc-nl
• unknownMultiple vulnerabilities in GitLab (August 13, 2026)cert-fr-avis
• mediumCVE-2026-6821: GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.0.6, 19.…nvd
• mediumCVE-2026-4879: GitLab has remediated an issue in GitLab EE affecting all versions from 16.0 before 19.0.6, 19.…nvd
• highCVE-2026-19228: GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and…nvd
• mediumCVE-2026-18433: GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and…nvd
• highCVE-2026-16494: GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and…nvd
• highCVE-2026-15217: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.0.6,…nvd
• highCVE-2026-15216: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.0.6,…nvd
• lowCVE-2025-9486: GitLab has remediated an issue in GitLab EE affecting all versions from 15.6 before 19.0.6, 19.…nvd
• mediumCVE-2026-8667: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6 before 19.0.6, …nvd
• mediumCVE-2026-7427: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 19.0.6, …nvd

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
• unknownMultiple vulnerabilities in GitLab (August 13, 2026)cert-fr-avis · 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

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