Vulnerability in Ech0 (CVE-2026-79668)
Summary
Vulnerability in Ech0 (CVE-2026-79668). Risk of unauthorized operations or information disclosure. Exploitable via PUT /api/echo/like/.
Original description
The description as published by the source.
Ech0's Unauthenticated Like Endpoint Enables Arbitrary Engagement Metric Inflation in github.com/lin-snow/ech0
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-79668 has been found in Ech0.
Attackers can target a specific entry point like PUT /api/echo/like/ over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 5.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Ech0 CVE-2026-79668" on the vendor's site.
CVE-2026-79668 (Ech0) — CWE-306 / CVSS v3 5.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: PUT /api/echo/like/
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.
A vulnerability (CWE-306) exists in Ech0. Attackers reach the vulnerable code path via PUT /api/echo/like/ without authentication.
Check the vendor advisory for the affected versions of Ech0. Attack surface: PUT /api/echo/like/.
Severity: Medium (CVSS 5.3/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual PUT /api/echo/like/ requests with malformed payloads or SQL meta-characters. Run grep -r 'Ech0' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'Ech0' . | 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
Ech0を grep し、稼働しているサービス・バージョンを把握する。 -
2Hunt for indicators of compromise detect
grep 'PUT /api/echo/like/' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
PUT /api/echo/like/への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Post-deployment verification verify
Replay attack against PUT /api/echo/like/ on staging to confirm patch closes the vector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 2 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
References
- advisory github.com
- package github.com
- web nvd.nist.gov
- web disclosure@vulncheck.com
- web github.com
- web github.com