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Vulnerability record · CVE-2026-24058 · published 22 January 2026

CVE-2026-24058: Charm soft serve vulnerability

Charm · Soft Serve

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.

8.1 CVSS 4.0 High EPSS 0.59% · top 54.1% CWE-289 · CWE-289
8.1CVSS 4.0 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

CVSS: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:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/charmbracelet/soft-serve/commit/8539f9ad39918b67d612a35785a2b4326efc8741 Patch
https://github.com/charmbracelet/soft-serve/releases/tag/v0.11.3 ProductRelease Notes
https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-pchf-49fh-w34r Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-30832Charm soft serve server-side request forgery (ssrf) vulnerabilitySoft Serve is a self-hostable Git server for the command line. From version 0.6.0 to before version 0.11.4, an authenticated SSH user can force the s…EPSS 0.39%7.6CVE-2025-64522Charm soft serve server-side request forgery (ssrf) vulnerabilitySoft Serve is a self-hostable Git server for the command line. Versions prior to 0.11.1 have a SSRF vulnerability where webhook URLs are not validate…EPSS 0.34%7.5CVE-2023-43809Charm soft serve improper authentication vulnerabilitySoft Serve is a self-hostable Git server for the command line. Prior to version 0.6.2, a security vulnerability in Soft Serve could allow an unauthen…EPSS 0.89%7.1CVE-2026-33353Charm soft serve information exposure vulnerabilitySoft Serve is a self-hostable Git server for the command line. From version 0.6.0 to before version 0.11.6, an authorization flaw in repo import allo…EPSS 0.42%5.4CVE-2026-22253Charm soft serve incorrect authorization vulnerabilitySoft Serve is a self-hostable Git server for the command line. Prior to version 0.11.2, an authorization bypass in the LFS lock deletion endpoint all…EPSS 0.31%5.3CVE-2025-22130Charm soft serve path traversal vulnerabilitySoft Serve is a self-hostable Git server for the command line. Prior to 0.8.2 , a path traversal attack allows existing non-admin users to access and…EPSS 0.68%

Source: NIST National Vulnerability Database (record CVE-2026-24058), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.