CVE-2026-56304
picklescan - Arbitrary File Creation via logging.FileHandler Deserialization
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jun 20, 2026
- Updated
- Jun 24, 2026
- Reserved
- Jun 20, 2026
Description
picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malicious pickle payloads to bypass RCE blocklists and create lock files or other filesystem artifacts, potentially causing denial of service or application disruption.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L | VulnCheck |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
picklescanpicklescan |
|
References
- GHSA Advisory GHSA-m7j5-r2p5-c39rvendor-advisory
- VulnCheck Advisory: picklescan - Arbitrary File Creation via logging.FileHandler Deserializationthird-party-advisory
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