CVE-2026-2900Network attack vector

Maintainer-level approval-rule tampering via unchecked GraphQL mutations

Published May 14, 2026 · Updated May 14, 2026

Missing authorization in GitLab EE allows remote authenticated users with Maintainer permissions to alter project approval rules. The GraphQL approval-rule mutations omit the authorization check that should enforce instance-level prevention of approval-rule editing. Exploitation requires that prevention setting to be enabled; successful requests can modify or delete project approval rules.

CVSS severity2.7
Low
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in GitLab EE allows remote authenticated users with Maintainer permissions to alter project approval rules. The GraphQL approval-rule mutations omit the authorization check that should enforce instance-level prevention of approval-rule editing. Exploitation requires that prevention setting to be enabled; successful requests can modify or delete project approval rules.

The record

CVE
CVE-2026-2900
Published
May 14, 2026
Updated
May 14, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-862, T1685
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 14, 2026CVE publishedPublication date reported by the CVE source.
  2. May 14, 2026Record 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=16.10 <18.9.7
  2. Affected versionversion=18.10 <18.10.6
  3. Affected versionversion=18.11 <18.11.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

GitLab · GitLabversion=16.10 <18.9.7; version=18.10 <18.10.6; version=18.11 <18.11.3

Published CVSS scores

2.7GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1685Disable or Modify Tools

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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