CVE-2026-1660

Name: CVE-2026-1660
Creator: NVD / NIST
Published: 2026-04-22T17:16:33.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2026-1660 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.3 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to cause denial of service when importing issues due to improper input validation.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.3 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to cause denial of service when importing issues due to improper input validation.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.40%

32.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 12.3.0, < 18.9.6
Gitlab	Gitlab	>= 18.10.0, < 18.10.4
Gitlab	Gitlab	18.11.0

References

https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/Release Notes, Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/588200Broken Link
https://hackerone.com/reports/3518743Permissions Required

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-1660?

How severe is CVE-2026-1660?

CVE-2026-1660 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-1660?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-1660?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST