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    CVE-2026-79668

    Ech0 before 4.7.3 contains an authentication bypass vulnerability in the PUT /api/echo/like/:id endpoint that allows unauthenticated attackers to increment engagement metrics without identity verification or rate limiting. Attackers can send repeated requests to arbitrarily inflate the fav_count field for any known echo identifier, compromising the integrity of engagement metrics and social ranking systems.

    Published:Aug 25, 2026
    Last Modified:Aug 26, 2026
    EPS:Aug 25, 2026
    EPSS Score:0.00256
    CVSS Score:5.3

    Affected Products

    Vendor
    Ech0
    Product
    Ech0
    Vendor
    Lin-snow
    Product
    Ech0

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-79672 (CVSS 7) — Ech0 before 4.4.3 fails to enforce scope-based authorization on nine comment panel admin endpoints, allowing a…
    CVE-2026-79671 (CVSS 5.1) — Ech0 before 4.4.3 contains a server-side request forgery vulnerability in the validateWebhookURL function (web…
    CVE-2026-79670 (CVSS 4.8) — Ech0 before 4.4.3 contains a stored cross-site scripting vulnerability in the file upload endpoint that valida…
    CVE-2026-79669 (CVSS 5.3) — Ech0 before 4.4.3 lacks authorization checks on system log endpoints allowing any authenticated non-admin user…
    CVE-2026-79667 (CVSS 7.2) — Ech0 version 4.3.4 and earlier fails to reliably enforce scoped access token (least-privilege) restrictions on…
    CVE-2026-79666 (CVSS 7.1) — Ech0 before 4.4.3 fails to enforce administrator authorization on dashboard log endpoints, allowing any authen…
    CVE-2026-79665 (CVSS 8.7) — Ech0 before 4.5.1 contains an authorization bypass vulnerability where session tokens skip scope validation in…
    CVE-2026-79664 (CVSS 9.1) — Ech0 before 4.7.3 fails to properly revoke access tokens created with never-expire option, allowing attackers …
    CVE-2026-79663 (CVSS 4.8) — Ech0 before 4.7.3 contains a stored cross-site scripting vulnerability in the public RSS feed where tag names …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High