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CVE-2025-4565
Vulnerability in protobuf (CVE-2025-4565)
Summary
vulnerability in protobuf (CVE-2025-4565). Risk of unauthorized operations or information disclosure. Exploitable via ``SGROUP``. Mitigation: upgrade to `6.31.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-4565** has been found in protobuf.
Attackers can target a specific entry point like ``SGROUP`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade protobuf to **6.31.1** or later.
If unsure, ask your IT team or search "protobuf CVE-2025-4565" on the vendor's site.
CVE-2025-4565 (protobuf) — CWE-674 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `SGROUP`
Patched: `6.31.1` — 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-674) exists in protobuf. Attackers reach the vulnerable code path via ``SGROUP`` without authentication.
📍 Affected scope
protobuf — . Attack surface: `SGROUP`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **6.31.1**.
🛡️ 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 'protobuf' .` 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
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1Identify exposure identify
grep -r 'protobuf' . | 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 `protobuf` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade protobuf to 6.31.1ステージング環境で 6.31.1 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。
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7Post-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
PyPI
protobuf
[{"type":"ECOSYSTEM","events":[{"introduced":"6.30.0rc1"},{"fixed":"6.31.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2025-4565
- advisory https://github.com/advisories/GHSA-8qvm-5x2c-j2w7
- package https://github.com/protocolbuffers/protobuf
- package https://pypi.org/project/protobuf
- web https://github.com/protocolbuffers/protobuf/commit/17838beda2943d08b8a9d4df5b68f5f04f26d901
- web https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-735f-pc8j-v9w8
- web https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8qvm-5x2c-j2w7
- web https://github.com/protocolbuffers/protobuf/blob/main/python/google/protobuf/internal/decoder_test.py#L87-L98
- web https://github.com/protocolbuffers/protobuf/blob/main/python/google/protobuf/internal/message_test.py#L1436-L1478
- web https://github.com/protocolbuffers/protobuf/tree/main/python#implementation-backends