Soft Serve Affected by an Authentication Bypass in github.com/charmbracelet/soft-serve
Soft Serve Affected by an Authentication Bypass in github.com/charmbracelet/soft-serve
02 / AFFECTED SOFTWARE
Affected packages
45 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Soft Serve Affected by an Authentication Bypass in github.com/charmbracelet/soft-serve
### Impact _What kind of vulnerability is it? Who is impacted?_ This issue impacts every Soft Serve instance. A critical authentication bypass 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. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Yes, please upgrade to version 0.11.3 as soon as possible. ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ You need to upgrade
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.
05 / REFERENCES
Further evidence
- https://github.com/charmbracelet/soft-serve/commit/8539f9ad39918b67d612a35785a2b4326efc8741
- https://github.com/charmbracelet/soft-serve/releases/tag/v0.11.3
- https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-pchf-49fh-w34r
- https://nvd.nist.gov/vuln/detail/CVE-2026-24058
- https://github.com/charmbracelet/soft-serve
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24058.json