BIT-gitlab-2026-6896: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
A cross-site scripting (XSS) vulnerability exists in GitLab EE versions from 13.11 up to but not including 18.11.7, 19.0 up to but not including 19.0.4, and 19.1 up to but not including 19.1.2. This flaw allows an authenticated user with developer-role permissions to execute arbitrary scripts in another user's browser session due to improper sanitization of user input. The issue has been remediated in the specified fixed versions.
AI Analysis
Technical Summary
GitLab EE contained an XSS vulnerability (CVE-2026-6896) affecting multiple version ranges: >=13.11.0 <18.11.7, >=19.0.0 <19.0.4, and >=19.1.0 <19.1.2. Under certain conditions, an authenticated developer could inject malicious scripts that execute in other users' browsers. This vulnerability arises from improper neutralization of user-supplied input during web page generation. The vendor has released fixes in versions 18.11.7, 19.0.4, and 19.1.2 to address this issue.
Potential Impact
An attacker with developer-level access could exploit this vulnerability to execute arbitrary scripts in the context of other users' browser sessions, potentially leading to session hijacking or other malicious actions within the affected GitLab instance. The impact is limited to authenticated users with developer permissions and does not affect unauthenticated users.
Mitigation Recommendations
Upgrade affected GitLab EE instances to versions 18.11.7, 19.0.4, or 19.1.2 or later, where this vulnerability has been fixed. No other mitigations are specified or required beyond applying these official patches.
BIT-gitlab-2026-6896: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Description
A cross-site scripting (XSS) vulnerability exists in GitLab EE versions from 13.11 up to but not including 18.11.7, 19.0 up to but not including 19.0.4, and 19.1 up to but not including 19.1.2. This flaw allows an authenticated user with developer-role permissions to execute arbitrary scripts in another user's browser session due to improper sanitization of user input. The issue has been remediated in the specified fixed 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
GitLab EE contained an XSS vulnerability (CVE-2026-6896) affecting multiple version ranges: >=13.11.0 <18.11.7, >=19.0.0 <19.0.4, and >=19.1.0 <19.1.2. Under certain conditions, an authenticated developer could inject malicious scripts that execute in other users' browsers. This vulnerability arises from improper neutralization of user-supplied input during web page generation. The vendor has released fixes in versions 18.11.7, 19.0.4, and 19.1.2 to address this issue.
Potential Impact
An attacker with developer-level access could exploit this vulnerability to execute arbitrary scripts in the context of other users' browser sessions, potentially leading to session hijacking or other malicious actions within the affected GitLab instance. The impact is limited to authenticated users with developer permissions and does not affect unauthenticated users.
Mitigation Recommendations
Upgrade affected GitLab EE instances to versions 18.11.7, 19.0.4, or 19.1.2 or later, where this vulnerability has been fixed. No other mitigations are specified or required beyond applying these official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-gitlab-2026-6896
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-6896"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
- Cvss Version
- null
Threat ID: 6a54ae0068715ace438f7e8d
Added to database: 07/13/2026, 09:21:04 UTC
Last enriched: 07/13/2026, 09:55:33 UTC
Last updated: 07/14/2026, 03:32:59 UTC
Views: 4
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