Vulnerability in quick-xml (RUSTSEC-2026-0194)

Summary

vulnerability in quick-xml (RUSTSEC-2026-0194). Risk of unauthorized operations or information disclosure. Exploitable via ``Attributes``. Mitigation: upgrade to `0.41.0` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **RUSTSEC-2026-0194** has been found in quick-xml. Attackers can target a specific entry point like ``Attributes`` over the network to misuse the product. Risk of unauthorized operations or information disclosure. CVSS score: ?/10. What to do: upgrade quick-xml to **0.41.0** or later. If unsure, ask your IT team or search "quick-xml RUSTSEC-2026-0194" on the vendor's site.

RUSTSEC-2026-0194 (quick-xml) — Attack vector: remote (network-reachable) / unauthenticated / no user interaction Attack surface: `Attributes` / `NsReader` / `snapshot.xml` Patched: `0.41.0` — 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** (unclassified) exists in quick-xml. Attackers reach the vulnerable code path via ``Attributes`` without authentication.

📍 Affected scope

quick-xml — . Attack surface: `Attributes` / `NsReader` / `snapshot.xml`.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure

🔧 How to fix

Update to **0.41.0**.

🛡️ 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 'quick-xml' .` 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
Identify exposure identify
```
grep -r 'quick-xml' . | 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 `quick-xml` を grep し、稼働しているサービス・バージョンを把握する。
6
Apply patch patch
```
Upgrade quick-xml to 0.41.0
```
ステージング環境で 0.41.0 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。
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

crates.io quick-xml

[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.41.0"}]}]