CVE-2025-8279: Insufficient input validation within GitLab Language Server 7.6.0 and later before 7.30.0 allows arbitrary Gra

This month

HIGH 8.7REMOTEUPGRADE

CVE-2025-8279 is a high-severity flaw (CVSS 8.7) affecting language server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insufficient input validation within GitLab Language Server 7.6.0 and later before 7.30.0 allows arbitrary GraphQL query execution

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.7 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-306
Published	2025-07-28
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-07-28 14:15 UTCPublished CVE record published
2026-06-17 10:06 UTCUpdated Record last modified

gitlab language server UPGRADE

Affected: >= 7.6.0 and < 7.30.0

Fixed in: 7.30.0

Safe to downgrade to: a release before 7.6.0

1. Check installed version

apt-cache policy language-server || rpm -q language-server || language-server --version

2. UPGRADE to 7.30.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade language-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade language-server

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 7.6.0 (Debian / Ubuntu)

apt-cache madison language-server sudo apt install language-server=<VERSION_BEFORE_7.6.0> sudo apt-mark hold language-server

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

dnf --showduplicates list language-server sudo dnf downgrade language-server-<VERSION_BEFORE_7.6.0> sudo dnf versionlock add language-server

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.

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-2025-8279?

language server: upgrade to 7.30.0. Exact commands for each OS are on this page.

Is CVE-2025-8279 being exploited?

CVE-2025-8279 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-2025-8279 affect?

CVE-2025-8279 affects language server. Severity is high (CVSS 8.7). Insufficient input validation within GitLab Language Server 7.6.0 and later before 7.30.0 allows arbitrary GraphQL query execution

How urgent is CVE-2025-8279?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

Software pages

GitLab vulnerabilities

References

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