What’s Vulnerable › Vulnerabilities

CVE-2023-0508: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') in GitLab

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-07 · updated 2026-06-17
• Weakness: CWE-113

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.4 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. Open redirection was possible via HTTP response splitting in the NPM package API.

Affected products

• GitLab: from 15.4.0 before 15.10.8; from 15.11.0 before 15.11.7; from 16.0.0 before 16.0.2 — fixed in 15.10.8, 15.11.7, 16.0.2

How to fix

Upgrade to a fixed version: GitLab 15.10.8, 15.11.7, 16.0.2. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0508.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/389328
• https://hackerone.com/reports/1842314
• https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0508.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/389328
• https://hackerone.com/reports/1842314
• https://gitlab.com/gitlab-org/gitlab/-/issues/389328

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