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OSV-2026-1026
Vulnerability in open62541 (OSV-2026-1026)
Summary
vulnerability in open62541 (OSV-2026-1026). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `81470adffcc5540e8016aeb6fcd0601e5f062dbb` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **OSV-2026-1026** has been found in open62541.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade open62541 to **81470adffcc5540e8016aeb6fcd0601e5f062dbb** or later.
If unsure, ask your IT team or search "open62541 OSV-2026-1026" on the vendor's site.
OSV-2026-1026 (open62541) —
Patched: `81470adffcc5540e8016aeb6fcd0601e5f062dbb` — 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 open62541.
📍 Affected scope
open62541 — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **81470adffcc5540e8016aeb6fcd0601e5f062dbb**.
🛡️ 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 'open62541' .` 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 'open62541' . | 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 `open62541` 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 open62541 to 81470adffcc5540e8016aeb6fcd0601e5f062dbbステージング環境で 81470adffcc5540e8016aeb6fcd0601e5f062dbb 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
OSS-Fuzz
open62541
[{"repo":"https:\/\/github.com\/open62541\/open62541.git","type":"GIT","events":[{"introduced":"78e28f558c4a36cb10c86962c86d6770482920e5"},{"fixed":"81470adffcc5540e8016aeb6fcd0601e5f062dbb"}]}]