CVE-2026-56304CWE-502

picklescan - Arbitrary File Creation via logging.FileHandler Deserialization

Medium · published June 20, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
37.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
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
EPSS
0.00443 · 37.4th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-06-20T15:24Z
EPSS history
Timeline
  • 20 JUN 15:24Z
    picklescan - Arbitrary File Creation via logging.FileHandler Deserialization
    cvelistv5