Soft Serve: Authenticated repo import can clone server-local private repositories
Priority HIGH 70CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-862.
Summary
Soft 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 allows any authenticated SSH user to clone a server-local Git repository, including another user's private repo, into a new repository they control. This issue has been patched in version 0.11.6.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00378 32nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed soft-serve (charmbracelet): 0.11.6github.com/charmbracelet/soft-serve (Go): 0.11.6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| charmbracelet | soft-serve | 0.6.0 to before 0.11.6 | 0.11.6 | Patch available | CNA |
| — | github.com/charmbracelet/soft-serve (Go) | 0.6.0 to before 0.11.6 | 0.11.6 | Patch available | GHSA-xgxp-f695-6vrp |
- soft-serve Vendorcharmbracelet Affected 0.6.0 to before 0.11.6 Fixed in 0.11.6 Patch available CNA
- github.com/charmbracelet/soft-serve (Go) Vendor— Affected 0.6.0 to before 0.11.6 Fixed in 0.11.6 Patch available GHSA-xgxp-f695-6vrp
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:charm:soft_serve:*:*:*:*:*:go:*:* | 0.6.0 to before 0.11.6 | Vulnerable | charmbracelet |
- cpe:2.3:a:charm:soft_serve:*:*:*:*:*:go:*:* Versions 0.6.0 to before 0.11.6 Vulnerable ·charmbracelet
Remediation
- Fix · CNA soft-serve (charmbracelet) Fixed in 0.11.6
- Fix · GHSA-xgxp-f695-6vrp github.com/charmbracelet/soft-serve (Go) Fixed in 0.11.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-33353
- 2026-10-03 Alias added: GHSA-xgxp-f695-6vrp
References
More charmbracelet Soft Serve vulnerabilities
- TI-2026-23661 Soft Serve: SSRF via unvalidated LFS endpoint in repo import CVSS 3.1CRITICAL 9.1
- TI-2025-39912 Soft Serve is vulnerable to SSRF through its Webhooks CVSS 3.1CRITICAL 9.1
- TI-2023-23497 Soft Serve Public Key Authentication Bypass Vulnerability when Keyboard-Interactive SSH Authentication is Enabled CVSS 3.1HIGH 7.5
- TI-2026-17863 Soft Serve is missing an authorization check in LFS lock deletion CVSS 3.1MEDIUM 5.4
- TI-2026-19385 Soft Serve has Critical Authentication Bypass CVSS 4.0HIGH 8.1
- TI-2025-16079 Soft Serve allows path traversal attacks CVSS 4.0MEDIUM 5.3
Sources
- CVE-2026-33353 · CVE Program
- CVE-2026-33353 · NVD
- FIRST EPSS
- GHSA-xgxp-f695-6vrp · GitHub Advisory Database · CC BY 4.0
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