CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NCVE-2026-79668
Medium (6.9). EPSS 0.4% chance of exploitation in the next 30 days. Fixed in github.com/lin-snow/ech0 1.4.8-0.20260503040728-a7e8b8e84bd1.
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.
Severity
CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-31)
- CWE
- CWE-306
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-rgj7-vg8v-j4wr | Go | github.com/lin-snow/ech0 | <1.4.8-0.20260503040728-a7e8b8e84bd1 | 1.4.8-0.20260503040728-a7e8b8e84bd1 |
| GO-2026-5623 | Go | github.com/lin-snow/ech0 | <1.4.8-0.20260503040728-a7e8b8e84bd1 | 1.4.8-0.20260503040728-a7e8b8e84bd1 |