{"id":"CVE-2025-67748","title":"Fickling is a Python pickling decompiler and static analyzer","summary":"Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports. This led to unsafe pickles based on `pty.spawn()` being incorrectly …","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-94","CWE-184","CWE-502"],"vendor":"trailofbits","product":"fickling","affected":["fickling < 0.1.6"],"patched":["fickling 0.1.6"],"published":"2025-12-16","updated":"2026-10-07","sourceUpdated":"2026-10-07T19:10:00.160","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-67748","references":[{"url":"https://github.com/trailofbits/fickling/pull/108","label":"security-advisories@github.com"},{"url":"https://github.com/trailofbits/fickling/pull/187","label":"security-advisories@github.com"},{"url":"https://github.com/trailofbits/fickling/security/advisories/GHSA-r7v6-mfhq-g3m2","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.0027,"epssPercentile":0.1749,"ingestedAt":"2026-10-07T20:46:46.945Z","slug":"CVE-2025-67748","body":"## Overview\n\nFickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports. This led to unsafe pickles based on `pty.spawn()` being incorrectly flagged as `LIKELY_SAFE`, and was fixed in version 0.1.6. This impacted any user or system that used Fickling to vet pickle files for security issues.\n\n## Affected\n\n- `fickling < 0.1.6`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fickling 0.1.6`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}