← Back
UBUNTU-CVE-2026-9648
Vulnerability in haskell-crypton-x509-validation (UBUNTU-CVE-2026-9648)
Summary
vulnerability in haskell-crypton-x509-validation (UBUNTU-CVE-2026-9648). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **UBUNTU-CVE-2026-9648** has been found in haskell-crypton-x509-validation.
Confidential information can be exposed externally. CVSS score: ?/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "haskell-crypton-x509-validation UBUNTU-CVE-2026-9648" on the vendor's site.
UBUNTU-CVE-2026-9648 (haskell-crypton-x509-validation) —
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** (unclassified) exists in haskell-crypton-x509-validation.
📍 Affected scope
haskell-crypton-x509-validation — .
🔥 Severity
Severity: ?. Confidential information can be exposed externally
🔧 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 'haskell-crypton-x509-validation' .` 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 'haskell-crypton-x509-validation' . | 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 `haskell-crypton-x509-validation` を grep し、稼働しているサービス・バージョンを把握する。
-
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
Ubuntu:24.04:LTS
haskell-crypton-x509-validation
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:25.10
haskell-crypton-x509-validation
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
haskell-crypton-x509-validation
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- report https://ubuntu.com/security/CVE-2026-9648
- report https://www.cve.org/CVERecord?id=CVE-2026-9648
- report https://www.kb.cert.org/vuls/id/862559
- report https://github.com/kazu-yamamoto/crypton-certificate/pull/30
- report https://github.com/haskell/security-advisories/pull/332
- report https://github.com/kazu-yamamoto/crypton-certificate/pull/30/changes/f4b77edf6ead77f4a886da40e41eab20f0180e39
- report https://hackage.haskell.org/package/crypton-x509-validation-1.9.1/revisions/