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CVE-2025-8101
Vulnerability in linkifyjs (CVE-2025-8101)
Summary
vulnerability in linkifyjs (CVE-2025-8101). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `4.3.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-8101** has been found in linkifyjs.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade linkifyjs to **4.3.2** or later.
If unsure, ask your IT team or search "linkifyjs CVE-2025-8101" on the vendor's site.
CVE-2025-8101 (linkifyjs) — CWE-1321 /
Patched: `4.3.2` — 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** (CWE-1321) exists in linkifyjs.
📍 Affected scope
linkifyjs — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **4.3.2**.
🛡️ 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 'linkifyjs' .` 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 'linkifyjs' . | 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 `linkifyjs` 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 linkifyjs to 4.3.2ステージング環境で 4.3.2 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
npm
linkifyjs
[{"type":"SEMVER","events":[{"introduced":"4.3.1"},{"fixed":"4.3.2"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2025-8101
- package https://github.com/nfrasser/linkifyjs
- web https://fluidattacks.com/advisories/charly
- web https://github.com/nfrasser/linkifyjs/releases/tag/v4.3.2
- web https://www.npmjs.com/package/linkifyjs
- web https://caverav.cl/posts/linkify-xss/linkify-xss
- web https://github.com/nfrasser/linkifyjs/commit/931d3e28b68951b8f898ea4d6504696346b485b0
- web https://github.com/advisories/GHSA-95jq-xph2-cx9h