CVSS 4.0
8.1 highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:UCVE-2026-24058
High (8.1) in charm soft serve. EPSS 0.6% chance of exploitation in the next 30 days. Fixed in github.com/charmbracelet/soft-serve 0.11.3.
Soft Serve is a self-hostable Git server for the command line. Versions 0.11.2 and below have a critical authentication bypass vulnerability that allows an attacker to impersonate any user (including admin) by "offering" the victim's public key during the SSH handshake before authenticating with their own valid key. This occurs because the user identity is stored in the session context during the "offer" phase and is not cleared if that specific authentication attempt fails. This issue has been fixed in version 0.11.3.
Severity
CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)
- CWE
- CWE-289
- Published
- Modified
- Record from
- the NVD, synced
Affected
- charm:soft_serve
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-pchf-49fh-w34r | Go | github.com/charmbracelet/soft-serve | <0.11.3 | 0.11.3 |
| GO-2026-4353 | Go | github.com/charmbracelet/soft-serve | <0.11.3 | 0.11.3 |