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CVE-2026-42770
low
CVSS 3.7
Vulnerability in openssl (CVE-2026-42770)
Summary
vulnerability in openssl (CVE-2026-42770). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-42770** has been found in openssl.
Risk of unauthorized operations or information disclosure. CVSS score: 3.7/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "openssl CVE-2026-42770" on the vendor's site.
CVE-2026-42770 (openssl) — CWE-325 / CVSS v3 3.7
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
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-325) exists in openssl.
📍 Affected scope
openssl — .
🔥 Severity
Severity: Low (CVSS 3.7/10). Risk of unauthorized operations or information disclosure
🔧 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 'openssl' .` 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 'openssl' . | 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 `openssl` 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。
References
- patch [email protected]
- patch [email protected]
- patch [email protected]
- patch [email protected]
- patch [email protected]
- patch [email protected]
- web https://nvd.nist.gov/vuln/detail/CVE-2026-42770
- web https://github.com/openssl/security/commit/3da5a516cd2635a320ff748503db2cef7c4b0f02
- web https://github.com/openssl/security/commit/3ddbb7ab50bd93dfc59cbe08e269a67605aeebdb
- web https://github.com/openssl/security/commit/5f452bba2c681423d8fcffd120a19b757ee42e3c
- web https://github.com/openssl/security/commit/7fbfde7677ed8808828bf00ff01c937ca04bdda2
- web https://github.com/openssl/security/commit/ca2237ab5615641b662183b077f62c08d75e8070
- web https://github.com/advisories/GHSA-3cxm-476w-ghm2