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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/lin-snow/Ech0/security/advisories/GHSA-rgj7-vg8v-j4wr
https://www.vulncheck.com/advisories/ech0-before-unauthenticated-like-endpoint-metric-inflation

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 12:16

Updated : 2026-08-31 20:38

NVD link : CVE-2026-79668

Mitre link : CVE-2026-79668

CVE.ORG link : CVE-2026-79668

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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