Soft Serve is vulnerable to arbitrary file writing through its SSH API

published 2025-09-02 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-26657 , GHSA-33pr-m977-5w97 , GO-2025-3930

cvss: 7.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

Soft Serve is a self-hostable Git server for the command line. In versions 0.9.1 and below, attackers can create or override arbitrary files with uncontrolled data through its SSH API. This issue is fixed in version 0.10.0.

Patch / fix

fixed in 2 distros 2

go github.com/charmbracelet/soft-serve 0.10.0
charm soft_serve 0.10.0

suse opensuse

govulncheck-vulndb SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 0.0.20250918T182144-150000.1.107.1

suse advisories SUSE-SU-2025:03289-1

govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
govulncheck-vulndb openSUSE Tumbleweed 0.0.20250908T141310-1.1

opensuse advisories openSUSE-SU-2026:21483-1 openSUSE-SU-2025:15538-1

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 14 mo ago (2025-09-04)

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
GitHub	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
go	github.com/charmbracelet/soft-serve	<0.10.0	0.10.0

Affected products

charmbracelet soft-serve

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

github.com /charmbracelet/soft-serve/security/advisories/GHSA-33pr-m977-5w97
web, advisory
nvd.nist.gov /vuln/detail/CVE-2025-58355
advisory
github.com /charmbracelet/soft-serve
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary