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CVE-2026-8468
Vulnerability in plug (CVE-2026-8468)
Summary
vulnerability in plug (CVE-2026-8468). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `1.15.4, 1.16.3, 1.17.1, 1.18.2, 1.19.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-8468** has been found in plug.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade plug to **1.15.4, 1.16.3, 1.17.1, 1.18.2, 1.19.2** or later.
If unsure, ask your IT team or search "plug CVE-2026-8468" on the vendor's site.
CVE-2026-8468 (plug) — CWE-770 /
Patched: `1.15.4, 1.16.3, 1.17.1, 1.18.2, 1.19.2` — 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-770) exists in plug.
📍 Affected scope
plug — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **1.15.4, 1.16.3, 1.17.1, 1.18.2, 1.19.2**.
🛡️ 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 'plug' .` 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 'plug' . | 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 `plug` 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 plug to 1.15.4, 1.16.3, 1.17.1, 1.18.2, 1.19.2ステージング環境で 1.15.4, 1.16.3, 1.17.1, 1.18.2, 1.19.2 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
Hex
plug
[{"type":"SEMVER","events":[{"introduced":"1.4.0"},{"fixed":"1.15.4"}]},{"type":"SEMVER","events":[{"introduced":"1.16.0"},{"fixed":"1.16.3"}]},{"type":"SEMVER","events":[{"introduced":"1.17.0"},{"fixed":"1.17.1"}]},{"type":"SEMVER","events":[{"introduced":"1.18.0"},{"fixed":"1.18.2"}]},{"type":"SEMVER","events":[{"introduced":"1.19.0"},{"fixed":"1.19.2"}]}]
erlang
plug
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.19.2"}]}]
References
- advisory https://github.com/elixir-plug/plug/security/advisories/GHSA-468c-vq7p-gh64
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-8468
- package https://hex.pm/packages/plug
- package https://github.com/elixir-plug/plug
- patch https://github.com/elixir-plug/plug/commit/2cb7958d33030aa826b0c7404375844d4593d43a
- patch https://github.com/elixir-plug/plug/commit/33858427c7f2737d560a2e40a0c9a9270d77d1d7
- patch https://github.com/elixir-plug/plug/commit/aa69c5ece99c40ded88b8c6581ecc86664b0b734
- patch https://github.com/elixir-plug/plug/commit/d5dfffe25e975585227b1b85d247b0d14164bc45
- patch https://github.com/elixir-plug/plug/commit/df812a1527bae9e941965e897308a2b8bbf83a94
- web https://cna.erlef.org/cves/CVE-2026-8466.html
- web https://cna.erlef.org/cves/CVE-2026-8468.html
- web https://osv.dev/vulnerability/EEF-CVE-2026-8468
- web https://github.com/advisories/GHSA-468c-vq7p-gh64