CVSS 4.0
7.2 highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:NCVE-2026-79667
High (7.2). EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/lin-snow/ech0 4.3.5.
Ech0 version 4.3.4 and earlier fails to reliably enforce scoped access token (least-privilege) restrictions on several privileged admin routes. Multiple privileged endpoints (e.g., /api/inbox, /api/panel/comments, /api/backup/export) omit scope checks and authorize based only on the user's admin role, and the backup export handler discards token scope metadata entirely. An attacker holding a deliberately limited (low-scope) admin access token can reach broader privileged functionality than intended, including reading the inbox and exporting a full database backup ZIP archive. Fixed in 4.4.3.
Severity
CVSS 3.1
7.6 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
- CWE
- CWE-285
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4h9q-p5j4-xvvh | Go | github.com/lin-snow/ech0 | <4.3.5 | 4.3.5 |
| GO-2026-5123 | Go | github.com/lin-snow/ech0 | all versions | no fix published |