A TOCTOU and symlink race in svenstaro/miniserve 0.32.0 upload finalization (when uploads…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
A TOCTOU and symlink race in svenstaro/miniserve 0.32.0 upload finalization (when uploads are enabled) can allow an attacker to overwrite arbitrary files outside the intended upload/document root in deployments where the attacker can create/replace filesystem entries in the upload destination directory (e.g., shared writable directory/volume).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | miniserve (crates.io) | before 0.32.0 | 0.32.0 | Patch available | GHSA-mxc8-4jqf-368q |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- miniserve (crates.io) Vendor— Affected before 0.32.0 Fixed in 0.32.0 Patch available GHSA-mxc8-4jqf-368q
Remediation
- Fix · GHSA-mxc8-4jqf-368q miniserve (crates.io) Fixed in 0.32.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-67124
- 2026-10-03 Alias added: GHSA-mxc8-4jqf-368q
References
Sources
- CVE-2025-67124 · CVE Program
- CVE-2025-67124 · NVD
- FIRST EPSS
- GHSA-mxc8-4jqf-368q · GitHub Advisory Database · CC BY 4.0
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