CVSS 4.0
8.5 highCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NCVE-2026-79673
High (8.5). EPSS 0.4% chance of exploitation in the next 30 days. Fixed in github.com/lin-snow/ech0 4.4.3.
Ech0 before 4.4.3 protects the PUT /user endpoint with the profile:read scope, a read-only scope, but allows write operations including password changes. An attacker with an admin's profile:read access token can change the admin's password and login to obtain an unrestricted session token that bypasses all scope enforcement.
Severity
CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hm2h-wwwh-g49x | Go | github.com/lin-snow/ech0 | <4.4.3 | 4.4.3 |
| GO-2026-5431 | Go | github.com/lin-snow/ech0 | all versions | no fix published |