CVEvulnerability

CVE-2025-67747

7.1 HIGH Published 2025-12-16 Modified 2026-10-07 Official page ↗
Status
Analyzed
Published
2025-12-16
Last modified
2026-10-07
Assigner
[email protected]
CVSS 4.0 ([email protected])
7.1 HIGH — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-184, CWE-502

Description

Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 are missing `marshal` and `types` from the block list of unsafe module imports. Fickling started blocking both modules to address this issue. This allows an attacker to craft a malicious pickle file that can bypass fickling since it misses detections for `types.FunctionType` and `marshal.loads`. A user who deserializes such a file, believing it to be safe, would inadvertently execute arbitrary code on their system. This impacts any user or system that uses Fickling to vet pickle files for security issues. The issue was fixed in version 0.1.6.

Affected configurations

• trailofbits fickling (< 0.1.6)

Related

Weakness · CWE (2)

  • CWE-184 Incomplete List of Disallowed Inputs weakness
  • CWE-502 Deserialization of Untrusted Data weakness

References