CVE-2026-12053

HIGH 8.6 PoC AVAILABLE

Published 2026-06-25 · Last modified 2026-06-25

GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.1 that under certain conditions could have allowed a user to access sensitive information that had already been committed to a project, due to insufficient output filtering in Duo Workflows.

EXPLOIT AVAILABLE

Public exploit or PoC code exists. Modeled probability is still low, but the barrier to attack is reduced — watch closely.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 25th percentile

○ In CISA KEV ● Public exploit / PoC

Impact if exploited

8.6CVSS 3.1 · HIGH

ConfidentialityHigh
IntegrityNone
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

PoC https://hackerone.com/reports/3757762

Listed for defensive triage and patch prioritization.

Affected

Vendors Gitlab

Products Gitlab

Weakness (CWE)

CWE-532

CVSS vector

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

References

Exploits & PoC

https://hackerone.com/reports/3757762 technical-descriptionexploitpermissions-required

Technical & other

Sources: NVD · CVE.org · EPSS