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CVE-2025-50460
Unsafe Deserialization in ms-swift (CVE-2025-50460)
Summary
vulnerability in ms-swift (CVE-2025-50460). Successful exploitation can lead to full system takeover. Exploitable via ``yaml.FullLoader``.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-50460** has been found in ms-swift.
Attackers can target a specific entry point like ``yaml.FullLoader`` over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: ?/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "ms-swift CVE-2025-50460" on the vendor's site.
CVE-2025-50460 (ms-swift) — CWE-502 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `yaml.FullLoader` / `exploit.yaml` / `os.system`
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
**unsafe deserialization** (CWE-502) exists in ms-swift. Attackers reach the vulnerable code path via ``yaml.FullLoader`` without authentication.
📍 Affected scope
ms-swift — . Attack surface: `yaml.FullLoader` / `exploit.yaml` / `os.system`.
🔥 Severity
Severity: ?. Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ 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 'ms-swift' .` 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
-
1Identify exposure identify
grep -r 'ms-swift' . | 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 `ms-swift` 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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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
ms-swift
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.6.3"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2025-50460
- advisory https://github.com/advisories/GHSA-6757-jp84-gxfx
- advisory https://github.com/advisories/GHSA-fm6c-f59h-7mmg
- package https://github.com/modelscope/ms-swift
- package https://pypi.org/project/ms-swift
- web https://github.com/modelscope/ms-swift/security/advisories/GHSA-fm6c-f59h-7mmg
- web https://github.com/modelscope/ms-swift/pull/5174
- web https://github.com/modelscope/ms-swift/commit/b3418ed9b050dc079553c275c5ed14cfb2b66cf7
- web https://github.com/Anchor0221/CVE-2025-50460
- web https://github.com/modelscope/ms-swift/blob/main/tests/run.py#L420