Vulnerability in Weblate (CVE-2026-55228)
Summary
Vulnerability in Weblate (CVE-2026-55228). Confidential information can be exposed externally. Mitigation: upgrade to 2026.7 or later.
Original description
The description as published by the source.
Impact
The API did not properly handle project- and workspace-scoped teams and allowed setting invalid configurations, including granting access to projects the user has no access to.
Patches
References
Parts of this issue were independently reported by four reporters:
Source: NIST National Vulnerability Database NVD GitHub Advisory
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-2026-55228 has been found in Weblate.
Confidential information can be exposed externally. CVSS score: 8.1/10.
What to do: upgrade Weblate to 2026.7 or later.
If unsure, ask your IT team or search "Weblate CVE-2026-55228" on the vendor's site.
CVE-2026-55228 (Weblate) — CWE-639 / CVSS v3 8.1
Attack vector: remote (network-reachable) / no user interaction
Patched: 2026.7 — apply immediately
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-639) exists in Weblate.
Check the vendor advisory for the affected versions of Weblate.
Severity: High (CVSS 8.1/10). Confidential information can be exposed externally.
Update to 2026.7.
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 'Weblate' . 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 'Weblate' . | 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
Weblateを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade Weblate to 2026.7ステージング環境で 2026.7 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-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。
Affected packages
References
- web security-advisories@github.com
- web security-advisories@github.com
- web nvd.nist.gov
- web github.com
- web github.com