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CVE-2026-3553

Incorrect Authorization in GitLab

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.0 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to access confidential issue details due to incorrect authorization checks.

Public exploit

An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit.

Show the exploits1

References tagged exploit1 reference

Timeline

  1. ID reserved

    By GitLab

  2. · 3 months later

    Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-3553, by who scored it
Scored byCVSSScoreVector
GitLabCNA (assigner)3.1Low3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
NVDNVD · Analyzed3.1Low3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS (exploitation in 30 days)
0.24% · top 85% of all CVEs (12 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.1.

Affected products

  • GitLab · GitLab

    • affected 12.0 – < 18.10.8
    • affected 18.11 – < 18.11.5
    • affected 19.0 – < 19.0.2

What to do

Solution: Upgrade to versions 18.10.8, 18.11.5, 19.0.2 or above.

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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[![CVE-2026-3553](https://cveledger.app/badge/CVE-2026-3553.svg)](https://cveledger.app/cve/CVE-2026-3553)

Record last updated .