CVE-2026-4523: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 19.2.7, 19.3 before 19

Routine

LOW 3.7REMOTEUPGRADE

CVE-2026-4523 is a low-severity flaw (CVSS 3.7) affecting gitlab. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an unauthenticated user to read CI/CD job trace contents containing sensitive variable values due to improper authorization enforcement in the GraphQL API.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-862
Published	2026-09-29
Last modified	2026-10-05

Publisher (CNA): GitLab Inc. · Vendor: gitlab

Last updated 2026-10-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-29 10:17 UTCPublished CVE record published
2026-10-05 17:07 UTCUpdated Record last modified

gitlab gitlab UPGRADE

Affected: >= 15.11.0 and < 19.2.7 · >= 19.3.0 and < 19.3.3 · 19.4.0

Fixed in: 19.2.7, 19.3.3

Safe to downgrade to: a release before 15.11.0

1. Check installed version

apt-cache policy gitlab || rpm -q gitlab || gitlab --version

2. UPGRADE to 19.2.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gitlab

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gitlab

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 15.11.0 (Debian / Ubuntu)

apt-cache madison gitlab sudo apt install gitlab=<VERSION_BEFORE_15.11.0> sudo apt-mark hold gitlab

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gitlab sudo dnf downgrade gitlab-<VERSION_BEFORE_15.11.0> sudo dnf versionlock add gitlab

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Advisories and coverage

Official advisories

GitLab Security Releases: GitLab Critical Patch Release: 19.4.1, 19.3.3, 19.2.7 2026-09-23

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-4523?

gitlab: upgrade to 19.2.7, 19.3.3. Exact commands for each OS are on this page.

Is CVE-2026-4523 being exploited?

CVE-2026-4523 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-4523 affect?

CVE-2026-4523 affects gitlab. Severity is low (CVSS 3.7). GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an unauthenticated user to read CI/CD job trace cont

How urgent is CVE-2026-4523?

Priority 22/100. Remotely exploitable, no login, no user action

Software pages

GitLab vulnerabilities

Related CVEs

CVE-2026-10086 HIGH 8.7 UPGRADE GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 before 18.11.6, 19.0 before 19.0.
CVE-2026-6896 HIGH 8.7 UPGRADE GitLab has remediated an issue in GitLab EE affecting all versions from 13.11 before 18.11.7, 19.0 before 19.0
CVE-2026-84284 MEDIUM 5.3 UPGRADE GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.11 before 19.2.8, 19.3 before 19
CVE-2026-82632 LOW 3.1 UPGRADE GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9 before 19.2.8, 19.3 before 19.
CVE-2026-78335 MEDIUM 4.2 UPGRADE GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.

References

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