CVE-2026-79668 json
Ech0 before 4.7.3 Unauthenticated Like Endpoint Metric Inflation
published 6mo ago modified 2mo ago also EUVD-2026-65446 , GHSA-rgj7-vg8v-j4wr , GO-2026-5623
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/lin-snow/ech0 1.4.8-0.20260503040728-a7e8b8e84bd1
- lin-snow Ech0 4.7.3
Is CVE-2026-79668 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.43% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/lin-snow/ech0 | <1.4.8-0.20260503040728-a7e8b8e84bd1 |
1.4.8-0.20260503040728-a7e8b8e84bd1 |
Affected products
- lin-snow Ech0
Classification
References
-
github.com
/lin-snow/Ech0/commit/a7e8b8e84bd1e3db090dfb720f2c6c433356b442
web
-
github.com
/lin-snow/Ech0/security/advisories/GHSA-rgj7-vg8v-j4wr
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/ech0-before-unauthenticated-like-endpoint-metric-inflation
third-party-advisory
-
github.com
/lin-snow/Ech0
package
Sources
- CVE List CVE-2026-79668
- GitHub Advisory GHSA-rgj7-vg8v-j4wr
- NVD CVE-2026-79668
- OSV GO-2026-5623
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.