HIGH

CVE-2026-5173

CVSS v3

8.5

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

gitlabBitnamifrom 16.9.6 · fixed in 18.8.9

Full record on NVD

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.

Technical details

Published: 2026-04-08

Frequently asked questions

What is CVE-2026-5173?

Is CVE-2026-5173 actively exploited?

Active exploitation of CVE-2026-5173 has not been confirmed. Its EPSS score was 0.4% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-5173?

CVE-2026-5173 has a CVSS v3 base score of 8.5 (HIGH severity).

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