{"apiVersion":"1.0","identifier":"CVE-2026-79661","description":"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 fav_count counter of any echo (including private echoes) by supplying its UUID, which can be harvested from the public GET /api/echo/page feed. Repeated requests are accepted without deduplication, each triggering a database write and a four-key cache invalidation, allowing attackers to inflate popularity metrics and amplify load on the database and cache. Fixed in 4.7.3.","publishedAt":"2026-08-25T12:16:29","lastModifiedAt":"2026-08-27T17:20:48","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-79661","cvssScore":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","epssProbability":0.00246,"riskScore":0.66,"affectedProduct":"Ech0","affectedVersions":"<=4.5.6","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-79661","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-79661","en":"https://www.redsauce.net/en/cves/CVE-2026-79661","fr":"https://www.redsauce.net/fr/cves/CVE-2026-79661","pt":"https://www.redsauce.net/pt/cves/CVE-2026-79661","de":"https://www.redsauce.net/de/cves/CVE-2026-79661","sk":"https://www.redsauce.net/sk/cves/CVE-2026-79661","el":"https://www.redsauce.net/el/cves/CVE-2026-79661"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-79661"}}