CVE-2026-1388

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 27.9% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-02-25 20:05Z6 MO AGO

Last updated

2026-02-26 15:07Z6 MO AGO

Reserved

2026-01-23

Assigning CNA

GitLab

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.2

Document digest

9cc288114eeb2ab55a5603ddccd36c74f3480bed27f91b463e0c5348c316bfb6

• gitlab.comGitLab Issue #587560https://gitlab.com/gitlab-org/gitlab/-/issues/587560issue-trackingpermissions-required
• hackerone.comHackerOne Bug Bounty Report #3482893https://hackerone.com/reports/3482893technical-descriptionexploitpermissions-required
• about.gitlab.comhttps://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/