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CVE-2026-49757
Vulnerability in ash_authentication (CVE-2026-49757)
Summary
vulnerability in ash_authentication (CVE-2026-49757). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `4.14.0, 5.0.0-rc.10` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-49757** has been found in ash_authentication.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade ash_authentication to **4.14.0, 5.0.0-rc.10** or later.
If unsure, ask your IT team or search "ash_authentication CVE-2026-49757" on the vendor's site.
CVE-2026-49757 (ash_authentication) — CWE-290 /
Patched: `4.14.0, 5.0.0-rc.10` — 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-290) exists in ash_authentication.
📍 Affected scope
ash_authentication — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **4.14.0, 5.0.0-rc.10**.
🛡️ 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 'ash_authentication' .` 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 'ash_authentication' . | 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 `ash_authentication` 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 ash_authentication to 4.14.0, 5.0.0-rc.10ステージング環境で 4.14.0, 5.0.0-rc.10 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
ash_authentication
[{"type":"SEMVER","events":[{"introduced":"0.1.0"},{"fixed":"4.14.0"}]},{"type":"SEMVER","events":[{"introduced":"5.0.0-rc.0"},{"fixed":"5.0.0-rc.10"}]}]
References
- advisory https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-777c-2fxx-qr28
- package https://hex.pm/packages/ash_authentication
- patch https://github.com/team-alembic/ash_authentication/commit/64530644f9b37ebb76ca14aeb83a77597a0034b7
- patch https://github.com/team-alembic/ash_authentication/commit/728b8d28c1b5f465fa1116ef044a815300fc733d
- web https://cna.erlef.org/cves/CVE-2026-49757.html
- web 6b3ad84c-e1a6-4bf7-a703-f496b71e49db