8.7
HIGH
CVSS 3.1
CVE-2026-6552
Authorization Bypass Through User-Controlled Key in GitLab
Overview
Description
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.
Details
INFO
Published Date :
June 11, 2026, 12:16 p.m.
Last Modified :
July 31, 2026, 7:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | ceab7361-8a18-47b1-92ba-4d7d25f6715a | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
Update GitLab to a patched version to address improper authorization in Group SAML.
- Update GitLab to a patched version.
- Apply specific patches for versions 18.10.8, 18.11.5, or 19.0.2.
- Verify Group SAML identity management settings.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-6552 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-6552 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jul. 31, 2026
Action Type Old Value New Value Changed Description Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. 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. -
CVE Modified by [email protected]
Jul. 31, 2026
Action Type Old Value New Value Changed Description 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. Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. Removed CVSS V3.1 GitLab Inc.: AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N Removed CWE GitLab Inc.: CWE-639 Removed CPE Configuration OR *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 18.11.0 up to (excluding) 18.11.5 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.2 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 18.11.0 up to (excluding) 18.11.5 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.2 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 15.5.0 up to (excluding) 18.10.8 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 15.5.0 up to (excluding) 18.10.8 Removed Reference GitLab Inc.: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/ Removed Reference GitLab Inc.: https://gitlab.com/gitlab-org/gitlab/-/work_items/597295 Removed Reference GitLab Inc.: https://hackerone.com/reports/3655189 Removed Reference Type GitLab Inc.: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/ Types: Release Notes Removed Reference Type GitLab Inc.: https://gitlab.com/gitlab-org/gitlab/-/work_items/597295 Types: Issue Tracking Removed Reference Type GitLab Inc.: https://hackerone.com/reports/3655189 Types: Permissions Required Removed Affected [{'cpes': ['cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*'], 'repo': 'git://[email protected]:gitlab-org/gitlab.git', 'vendor': 'GitLab', 'product': 'GitLab', 'versions': [{'status': 'affected', 'version': '15.5', 'lessThan': '18.10.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '18.11', 'lessThan': '18.11.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '19.0', 'lessThan': '19.0.2', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] -
CVE Rejected by [email protected]
Jul. 31, 2026
Action Type Old Value New Value -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-6552', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-11T00:00:00+00:00'} -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*'], 'repo': 'git://[email protected]:gitlab-org/gitlab.git', 'vendor': 'GitLab', 'product': 'GitLab', 'versions': [{'status': 'affected', 'version': '15.5', 'lessThan': '18.10.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '18.11', 'lessThan': '18.11.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '19.0', 'lessThan': '19.0.2', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] -
Initial Analysis by [email protected]
Jun. 11, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 18.11.0 up to (excluding) 18.11.5 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.2 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 18.11.0 up to (excluding) 18.11.5 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.2 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 15.5.0 up to (excluding) 18.10.8 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 15.5.0 up to (excluding) 18.10.8 Added Reference Type GitLab Inc.: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/ Types: Release Notes Added Reference Type GitLab Inc.: https://gitlab.com/gitlab-org/gitlab/-/work_items/597295 Types: Issue Tracking Added Reference Type GitLab Inc.: https://hackerone.com/reports/3655189 Types: Permissions Required -
New CVE Received by [email protected]
Jun. 11, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N Added CWE CWE-639 Added Reference https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/ Added Reference https://gitlab.com/gitlab-org/gitlab/-/work_items/597295 Added Reference https://hackerone.com/reports/3655189
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.