Vulnerability in Svenstaro Miniserve
CVE-2025-67124
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Svenstaro Miniserve — versions 0.32.0
Weakness classification (CWE)
References
- github.com/svenstaro/miniserve (Product)
- gist.github.com/thesmartshadow/55688f87f8b985eb530e07d00ef8c63f (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-67124?
- CVE-2025-67124 is a medium-severity vulnerability in Svenstaro Miniserve, classified under Improper Link Resolution Before File Access. CVSS score: 6.8/10. Published 2026-01-23.
- How severe is CVE-2025-67124?
- Medium severity. CVSS v3 base score is 6.8 out of 10.