What’s Vulnerable › Vulnerabilities

CVE-2026-24058: Soft Serve has Critical Authentication Bypass

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-22 · updated 2026-06-17
• Weakness: CWE-289

Description

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.

Affected products

• charmbracelet soft-serve: before 0.11.3 — fixed in 0.11.3

How to fix

Upgrade to a fixed version: charmbracelet soft-serve 0.11.3. Check the vendor advisory for mitigations.

References

• 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

Get alerted when CVE-2026-24058 or the next vulnerability affects your stack