CVE-2026-78252Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Updated under an hour ago ()
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It affects GitLab. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an authenticated user could have induced a targeted user to perform unintended state-changing HTTP requests due to improper sanitization of user-controlled data in the Markdown JSON table renderer.
- CVSS
- 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitLab
- NVD analysis
- Analyzed
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
GitLab GitLab gitlab:gitlab | from 15.3 before 19.1.8; from 19.2 before 19.2.6; from 19.3 before 19.3.2 | CNA record |
gitlab gitlab gitlab:gitlab | from 15.3.0 before 19.1.8; from 15.3.0 before 19.1.8; from 19.2.0 before 19.2.6; from 19.2.0 before 19.2.6; from 19.3.0 before 19.3.2; from 19.3.0 before 19.3.2 | NVD |
References
- https://gitlab.com/gitlab-org/gitlab/-/work_items/621447issue-tracking
- https://hackerone.com/reports/3917471technical-description, exploit, permissions-required
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/release-notes, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.