{"id":"CVE-2026-79668","aliases":["GHSA-rgj7-vg8v-j4wr","GO-2026-5623"],"url":"https://o3.security/vulnerability/CVE-2026-79668","summary":"Ech0 before 4.7.3 Unauthenticated Like Endpoint Metric Inflation","details":"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":"2026-08-25T11:33:30.130Z","modified":"2026-09-02T03:30:14.671136103Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Go","name":"github.com/lin-snow/ech0","fixedVersion":"1.4.8-0.20260503040728-a7e8b8e84bd1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79668.json"},{"type":"ADVISORY","url":"https://github.com/lin-snow/Ech0/security/advisories/GHSA-rgj7-vg8v-j4wr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79668"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/ech0-before-unauthenticated-like-endpoint-metric-inflation"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-02T03:30:14.671136103Z"}}