CVE-2026-53872
picklescan - Arbitrary File Read via Unsafe Pickle Deserialization
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 17, 2026
- Updated
- Jun 17, 2026
- Reserved
- Jun 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
picklescanpicklescan |
|
References
- GHSA Advisory GHSA-9726-w42j-3qjrvendor-advisory
- VulnCheck Advisory: picklescan - Arbitrary File Read via Unsafe Pickle Deserializationthird-party-advisory
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