CVE-2026-6896

HIGH 8.7 ALL-YEARS

Published 2026-07-08 · Last modified 2026-07-09 · GitLab · NVD: Analyzed

GitLab has remediated an issue in GitLab EE affecting all versions from 13.11 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary scripts in another user's browser session due to improper sanitization of user-supplied input.

ELEVATED IMPACT

Severe if exploited (CVSS 8.7), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.4%chance of exploitation in 30 days · 34th percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable no

Impact if exploited

8.7CVSS 3.1 · HIGH · CNA

ConfidentialityHigh
IntegrityHigh
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
⚠Privileges: Requires a low-privilege account
⚠User interaction: A user must take an action (click / open a file)
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot: 2026-10-26T04:59:11.116Z

Affected

Vendors Gitlab

Products Gitlab

Weakness (CWE)

CWE-79: : Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Gitlab	Gitlab	≥ 13.11.0 and < 18.11.7
Gitlab	Gitlab	≥ 19.0.0 and < 19.0.4
Gitlab	Gitlab	≥ 19.1.0 and < 19.1.2

All CVSS metrics

HIGH 8.7 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
HIGH 8.7 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
MEDIUM 5.4 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

Exploit-tagged references (not proof of a PoC)

https://hackerone.com/reports/3682085 technical-descriptionexploitpermissions-requiredPermissions RequiredCVE record · GitLab · Updated 2026-07-08T20:46:38.858Z
NVD · CVE-2026-6896 · Updated 2026-10-25T17:10:00.197

Advisories

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-2-released/ Vendor AdvisoryCVE record · GitLab · Updated 2026-07-08T20:46:38.858Z
NVD · CVE-2026-6896 · Updated 2026-10-25T17:10:00.197
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42407 ADVISORYEUVD · EUVD-2026-42407

Technical & other

https://gitlab.com/gitlab-org/gitlab/-/work_items/597887 Broken LinkCVE record · GitLab · Updated 2026-07-08T20:46:38.858Z
NVD · CVE-2026-6896 · Updated 2026-10-25T17:10:00.197

Sources: NVD · CVE.org · All sources and attribution · EPSS