BIT-gitlab-2026-13320: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
GitLab CE/EE versions from 15.7 up to but not including 18.11.7, 19.0 up to 19.0.4, and 19.1 up to 19.1.2 contain a cross-site scripting (XSS) vulnerability. This issue arises from improper sanitization of user-supplied input, which under certain conditions could allow an authenticated user to execute arbitrary scripts in another user's browser session. The vulnerability has been remediated in later versions.
AI Analysis
Technical Summary
An XSS vulnerability exists in GitLab CE/EE affecting versions >=15.7.0 <18.11.7, >=19.0.0 <19.0.4, and >=19.1.0 <19.1.2. The flaw is due to improper neutralization of input during web page generation, allowing authenticated users to inject and execute arbitrary scripts in other users' browser sessions. This vulnerability has been fixed in versions 18.11.7, 19.0.4, and 19.1.2 and later.
Potential Impact
An authenticated user could exploit this vulnerability to execute arbitrary scripts in the context of another user's browser session. This could lead to session hijacking, unauthorized actions, or exposure of sensitive information within the affected GitLab instance. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade GitLab CE/EE to versions 18.11.7 or later if running a version >=15.7.0 and <18.11.7, to 19.0.4 or later if running >=19.0.0 and <19.0.4, or to 19.1.2 or later if running >=19.1.0 and <19.1.2. These versions contain the official fixes for this vulnerability.
BIT-gitlab-2026-13320: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Description
GitLab CE/EE versions from 15.7 up to but not including 18.11.7, 19.0 up to 19.0.4, and 19.1 up to 19.1.2 contain a cross-site scripting (XSS) vulnerability. This issue arises from improper sanitization of user-supplied input, which under certain conditions could allow an authenticated user to execute arbitrary scripts in another user's browser session. The vulnerability has been remediated in later versions.
Affected software
pkg:bitnami/gitlabRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An XSS vulnerability exists in GitLab CE/EE affecting versions >=15.7.0 <18.11.7, >=19.0.0 <19.0.4, and >=19.1.0 <19.1.2. The flaw is due to improper neutralization of input during web page generation, allowing authenticated users to inject and execute arbitrary scripts in other users' browser sessions. This vulnerability has been fixed in versions 18.11.7, 19.0.4, and 19.1.2 and later.
Potential Impact
An authenticated user could exploit this vulnerability to execute arbitrary scripts in the context of another user's browser session. This could lead to session hijacking, unauthorized actions, or exposure of sensitive information within the affected GitLab instance. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade GitLab CE/EE to versions 18.11.7 or later if running a version >=15.7.0 and <18.11.7, to 19.0.4 or later if running >=19.0.0 and <19.0.4, or to 19.1.2 or later if running >=19.1.0 and <19.1.2. These versions contain the official fixes for this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-gitlab-2026-13320
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-13320"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
- Cvss Version
- null
Threat ID: 6a54ae0068715ace438f7e99
Added to database: 07/13/2026, 09:21:04 UTC
Last enriched: 07/13/2026, 09:55:47 UTC
Last updated: 07/13/2026, 19:47:35 UTC
Views: 3
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