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CVE-2026-58439 high CVSS 8.1

Vulnerability in code.gitea.io/gitea (CVE-2026-58439)

Summary

vulnerability in code.gitea.io/gitea (CVE-2026-58439). Data can be tampered with by attackers. Exploitable via ``official``. Mitigation: upgrade to `1.27.0` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2026-58439** has been found in code.gitea.io/gitea. Attackers can target a specific entry point like ``official`` over the network to misuse the product. Data can be tampered with by attackers. CVSS score: 8.1/10. What to do: upgrade code.gitea.io/gitea to **1.27.0** or later. If unsure, ask your IT team or search "code.gitea.io/gitea CVE-2026-58439" on the vendor's site.
CVE-2026-58439 (code.gitea.io/gitea) — CWE-284 / CVSS v3 8.1 Attack vector: remote (network-reachable) / no user interaction Attack surface: `official` / `master` / `IsUserOfficialReviewer` / `ChangeTargetBranch` Patched: `1.27.0` — 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.
❓ What is the problem
**A vulnerability** (CWE-284) exists in code.gitea.io/gitea. Attackers reach the vulnerable code path via ``official`` without authentication.
📍 Affected scope
code.gitea.io/gitea — . Attack surface: `official` / `master` / `IsUserOfficialReviewer` / `ChangeTargetBranch`.
🔥 Severity
Severity: High (CVSS 8.1/10). Data can be tampered with by attackers
🔧 How to fix
Update to **1.27.0**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'code.gitea.io/gitea' .` 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 'code.gitea.io/gitea' . | 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 `code.gitea.io/gitea` を grep し、稼働しているサービス・バージョンを把握する。

  2. 6
    Apply patch patch 
    Upgrade code.gitea.io/gitea to 1.27.0

    ステージング環境で 1.27.0 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。

  3. 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

go code.gitea.io/gitea
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.27.0"}]}]

References

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