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CVE-2026-44264 medium CVSS 4.3

Cross-Site Scripting (XSS) in weblate (CVE-2026-44264)

Summary

cross-site scripting in weblate (CVE-2026-44264). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `5.17.1` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2026-44264** has been found in weblate. Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10. What to do: upgrade weblate to **5.17.1** or later. If unsure, ask your IT team or search "weblate CVE-2026-44264" on the vendor's site.
CVE-2026-44264 (weblate) — CWE-79 / CVSS v3 4.3 Attack vector: remote (network-reachable) / no user interaction Patched: `5.17.1` — apply immediately Workaround: Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should mitigate the risks. 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.
❓ What is the problem
**Cross-site scripting (XSS)** (CWE-79) exists in weblate.
📍 Affected scope
weblate — .
🔥 Severity
Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **5.17.1**.
🛡️ Workaround
Workaround: Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should mitigate the risks.
🔍 Detection
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 (7 steps)

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify 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。

  2. 5
    Apply temporary workaround mitigate
    Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should mitigate the risks.

    パッチが適用されるまでの応急処置として、Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should mitigate the risks. を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 6
    Apply patch patch
    Upgrade weblate to 5.17.1

    ステージング環境で 5.17.1 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と、Step 3 で見つけた異常検知の続報チェックを含めること。

  4. 7
    Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。

Affected packages

pip weblate
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.1"}]}]
PyPI weblate
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.1"}]}]

References

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