CVE-2025-8279Network attack vector

Arbitrary GraphQL queries via missing request authentication

Published Jul 28, 2025 · Updated Jul 28, 2025

Missing authentication in GitLab Language Server 7.6.0 through 7.29.x allows remote attackers to execute arbitrary GraphQL queries. GitLab has not publicly identified the request handler or the validation operation that accepts untrusted GraphQL input. No authentication or user interaction is required, but exploitation has high complexity and can read or modify data available to the configured GitLab session.

CVSS severity8.7
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in GitLab Language Server 7.6.0 through 7.29.x allows remote attackers to execute arbitrary GraphQL queries. GitLab has not publicly identified the request handler or the validation operation that accepts untrusted GraphQL input. No authentication or user interaction is required, but exploitation has high complexity and can read or modify data available to the configured GitLab session.

The record

CVE
CVE-2025-8279
Published
Jul 28, 2025
Updated
Jul 28, 2025
Vendor
GitLab
Product
GitLab Language Server
Classifications
CWE-306
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.6.0 <7.30.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLab Language Serverversion=7.6.0 <7.30.0

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7GitLabCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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