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 favcount...

CVE-2026-79661

Ech0 (through 4.5.6) exposes the PUT /api/echo/like/:id endpoint on its public router group with no authentication and no rate limiting . An unauthenticated attacker can increment the fav_count counter of any echo—including private ones—by supplying its UUID, which is harvestable from the public ...

CVE-2026-79661 Ech0 before 4.7.3 Unauthenticated fav_count Modification

Ech0 through 4.5.6 registers the PUT /api/echo/like/:id endpoint on the public router group without authentication or rate limiting. Unauthenticated attackers can increment the favcount counter of any echo including private echoes by supplying its UUID, which can be harvested from the public GET...