Vulnerability Report

CVE-2026-1662

Title: Gitlab Gitlab DoS

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-1662.

CWE Category CWE-770

Published Date Feb 25, 2026

Modified Date Feb 28, 2026

Exploit Status Not Found

Score 7.5 CVSS v3.1

Exploit Probability (EPSS)

0.05%

Vulnerability Summary

CVE-2026-1662: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.4 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause Denial of Service by sending specially crafted requests to the Jira events endpoint.

Impacted Vendors

gitlab 1

jenkins 1

Reference Links

https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/ https://gitlab.com/gitlab-org/gitlab/-/issues/588206 https://hackerone.com/reports/3519694

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-1662 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

February 28, 2026 MODIFIED

Vulnerability data updated via NVD.

February 28, 2026 MODIFIED

Vulnerability data updated via NVD.

February 27, 2026 MODIFIED

Vulnerability data updated via NVD.

February 25, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.