Path Traversal in Picklescan
CVE-2026-53872
picklescan before 0.0.35 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to read arbitrary server files by chaining io.FileIO and urllib.request.urlopen. Attackers can bypass RCE-focused blocklists to exfiltrate sensitive data like /etc/passwd to external servers.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.005 · change: -0.002
Affected products
- Picklescan — versions 0, 0.0.35
Weakness classification (CWE)
References
- github.com/mmaitre314/picklescan/security/advisories/GHSA-9726-w42j-3qjr (vendor-advisory)
- www.vulncheck.com/advisories/picklescan-arbitrary-file-read-via-unsafe-pickle-d… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-53872?
- CVE-2026-53872 is a high-severity vulnerability in Picklescan, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-17.
- How severe is CVE-2026-53872?
- High severity. CVSS v3 base score is 7.5 out of 10.