CVE-2026-1230

MEDIUM 4.1 ALL-YEARS

Published 2026-03-11 · Last modified 2026-03-11 · GitLab · NVD: Analyzed

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 1.0 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to cause repository downloads to contain different code than displayed in the web interface due to incorrect validation of branch references under certain circumstances.

LIMITED SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 10th percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation poc, automatable no

Impact if exploited

4.1CVSS 3.1 · MEDIUM · CNA

ConfidentialityNone
IntegrityLow
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-706: : Use of Incorrectly-Resolved Name or Reference

CVSS vector

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

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Gitlab	Gitlab	≥ 1.0.0 and < 18.7.6
Gitlab	Gitlab	≥ 1.0.0 and < 18.7.6
Gitlab	Gitlab	≥ 18.8.0 and < 18.8.6
Gitlab	Gitlab	≥ 18.8.0 and < 18.8.6
Gitlab	Gitlab	≥ 18.9.0 and < 18.9.2
Gitlab	Gitlab	≥ 18.9.0 and < 18.9.2

All CVSS metrics

MEDIUM 4.1 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
MEDIUM 4.1 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
MEDIUM 6.5 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

Exploit-tagged references (not proof of a PoC)

https://hackerone.com/reports/3505165 technical-descriptionexploitpermissions-requiredPermissions RequiredCVE record · GitLab · Updated 2026-03-11T16:05:00.849Z
NVD · CVE-2026-1230 · Updated 2026-06-17T10:15:21.943

Advisories

https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/ Release NotesVendor AdvisoryCVE record · GitLab · Updated 2026-03-11T16:05:00.849Z
NVD · CVE-2026-1230 · Updated 2026-06-17T10:15:21.943
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-11182 ADVISORYEUVD · EUVD-2026-11182

Technical & other

https://gitlab.com/gitlab-org/gitlab/-/work_items/587002 Broken LinkCVE record · GitLab · Updated 2026-03-11T16:05:00.849Z
NVD · CVE-2026-1230 · Updated 2026-06-17T10:15:21.943

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