CVE-2026-6552

highrejectedpriority · track · 0DEEUNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

— EPSS

CVSS 8.7 · high

Is it mine?

11 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

Rejected reason: This CVE ID has been rejected. GitLab determined that the reported behavior does not constitute a vulnerability: linking a group SAML identity requires the user to explicitly consent to that group controlling their GitLab account for sign-in, and management of group SAML identities by a group Owner is therefore expected behavior rather than an authorization bypass. No GitLab version was affected.

cvss

Technical severity, 0–10. One row per scoring source.

8.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.7highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Nsecondary · ENISA EU

v3.18.7highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Nsecondary · NCSC-NL NL

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-639US

affected products (11)

Products and version ranges known to be affected.

Open Source GitLab <18.10.8all versionscert_bundDE
Open Source GitLab <18.11.5all versionscert_bundDE
Open Source GitLab <19.0.2all versionscert_bundDE
Open Source GitLab< 18.10.8cert_bundDE
Open Source GitLab< 18.11.5cert_bundDE
Open Source GitLab< 19.0.2cert_bundDE
GitLab Community Edition, Enterprise Edition≤ vers:unknown/*ncsc_nlNL
Open Source GitLab≤ vers:unknown/*ncsc_nlNL
Bitnami gitlab15.5.0 → 18.10.8osvUSpkg:bitnami/gitlab
Bitnami gitlab18.11.0 → 18.11.5osvUSpkg:bitnami/gitlab
Bitnami gitlab19.0.0 → 19.0.2osvUSpkg:bitnami/gitlab

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2026-0196Kwetsbaarheden verholpen in GitLab Enterprise EditionNL2026-06-12csaf · ncsc_nlNL
GitLab heeft meerdere kwetsbaarheden verholpen in GitLab Community Edition en Enterprise Edition (EE) versies variërend van 12.0 tot voor 19.0.2, inclusief belangrijke releases zoals 17.x, 18.10.8, 18.11.5 en 19.0.2.
WID-SEC-W-2026-1886GitLab: Mehrere SchwachstellenDeutsch2026-06-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in GitLab ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, serverseitige Request-Forgery- und Cross-Site-Scripting-Angriffe durchzuführen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
BIT-gitlab-2026-6552Authorization Bypass Through User-Controlled Key in GitLab2026-06-12vendor · osvUS
GitLab has remediated an issue in GitLab EE affecting all versions from 15.5 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with group Owner role to take over another group member's GitLab account due to improper authorization in the Group SAML identity management functionality.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund ncsc_nl osv NVD CVE.org MITRE

published 2026-06-11modified 2026-07-31

references (2) cnnvd

External citations — patches, advisories, analysis.

scry

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