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CVE-2026-43897
SSRF (Server-Side Request Forgery) in link-preview-js (CVE-2026-43897)
Summary
SSRF in link-preview-js (CVE-2026-43897). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `4.0.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43897** has been found in link-preview-js.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade link-preview-js to **4.0.1** or later.
If unsure, ask your IT team or search "link-preview-js CVE-2026-43897" on the vendor's site.
CVE-2026-43897 (link-preview-js) — CWE-918 /
Patched: `4.0.1` — 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
**SSRF** (CWE-918) exists in link-preview-js.
📍 Affected scope
link-preview-js — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **4.0.1**.
🛡️ 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 'link-preview-js' .` 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 'link-preview-js' . | 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 `link-preview-js` 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 link-preview-js to 4.0.1ステージング環境で 4.0.1 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
link-preview-js
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.0.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-43897
- package https://github.com/OP-Engineering/link-preview-js
- web https://github.com/OP-Engineering/link-preview-js/commit/4396d48909fab37553c0e93e26447fe218363ede
- web https://github.com/OP-Engineering/link-preview-js/pull/179
- web https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1
- web https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-4gp8-rjrq-ch6q
- web https://github.com/advisories/GHSA-4gp8-rjrq-ch6q