Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary JavaScript in the context of another user's browser session due to improper sanitization of path components in the merge request diff viewer.
CVE-2026-84739
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-84739
GitLab
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"cpes": [
"cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
],
"repo": "https://gitlab.com/gitlab-org/gitlab",
"vendor": "GitLab",
"product": "GitLab",
"versions": [
{
"status": "affected",
"version": "13.11",
"lessThan": "19.2.7",
"versionType": "semver"
},
{
"status": "affected",
"version": "19.3",
"lessThan": "19.3.3",
"versionType": "semver"
},
{
"status": "affected",
"version": "19.4",
"lessThan": "19.4.1",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-84739
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #3492 · Revision 1
- Added to Heist Feed
- Publisher date