What’s Vulnerable › Vulnerabilities

CVE-2023-1965

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-03 · updated 2026-06-17
• Weakness: CWE-352

Description

An issue has been discovered in GitLab EE affecting all versions starting from 14.2 before 15.9.6, all versions starting from 15.10 before 15.10.5, all versions starting from 15.11 before 15.11.1. Lack of verification on RelayState parameter allowed a maliciously crafted URL to obtain access tokens granted for 3rd party Group SAML SSO logins. This feature isn't enabled by default.

Affected products

• GitLab: from 14.2 before 15.9.6; from 15.10 before 15.10.5; from 15.11 before 15.11.1 — fixed in 15.10.5, 15.11.1, 15.9.6

How to fix

Upgrade to a fixed version: GitLab 15.10.5, 15.11.1, 15.9.6. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-1965.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/406235
• https://hackerone.com/reports/1923672
• https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-1965.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/406235
• https://hackerone.com/reports/1923672

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