CVE-2026-6515Network attack vector

Authenticated registry access via invalid credentials

Published Apr 22, 2026 · Updated Apr 22, 2026

Insufficient session expiration in GitLab CE/EE allows remote authenticated users to access Virtual Registries with invalid credentials. The virtual registry credential-validation path accepts credentials after invalidation or outside their intended scope; GitLab has not disclosed the responsible code locus. Exploitation requires credentials and an enabled Virtual Registry and permits reading or modifying registry content within the improperly accepted scope.

CVSS severity5.4
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Insufficient session expiration in GitLab CE/EE allows remote authenticated users to access Virtual Registries with invalid credentials. The virtual registry credential-validation path accepts credentials after invalidation or outside their intended scope; GitLab has not disclosed the responsible code locus. Exploitation requires credentials and an enabled Virtual Registry and permits reading or modifying registry content within the improperly accepted scope.

The record

CVE
CVE-2026-6515
Published
Apr 22, 2026
Updated
Apr 22, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-613, T1550
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=18.10 <18.10.4
  2. Affected versionversion=18.11 <18.11.1
  3. Affected versionversion=18.2 <18.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=18.10 <18.10.4; version=18.11 <18.11.1; version=18.2 <18.9.6

Published CVSS scores

5.4GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1550Use Alternate Authentication Material

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo