Vulnerability in GitLab (CVE-2023-5831)
Summary
Vulnerability in GitLab (CVE-2023-5831). Risk of unauthorized operations or information disclosure. Exploitable via super_sidebar_logged_out.
Original description
The description as published by the source.
An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.0 before 16.3.6, all versions starting from 16.4 before 16.4.2, and all versions starting from 16.5.0 before 16.5.1 which have the super_sidebar_logged_out feature flag enabled. Affected versions with this default-disabled feature flag enabled may unintentionally disclose GitLab version metadata to unauthorized actors.
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2023-5831 has been found in GitLab.
Attackers can target a specific entry point like super_sidebar_logged_out over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "GitLab CVE-2023-5831" on the vendor's site.
CVE-2023-5831 (GitLab) — CWE-201
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: super_sidebar_logged_out
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-201) exists in GitLab. Attackers reach the vulnerable code path via super_sidebar_logged_out without authentication.
Check the vendor advisory for the affected versions of GitLab. Attack surface: super_sidebar_logged_out.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'GitLab' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'GitLab' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
GitLabを grep し、稼働しているサービス・バージョンを把握する。 -
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory github.com
- advisory nvd.nist.gov
- package git://git@gitlab.com:gitlab-org/gitlab.git
- report gitlab.com