CVE-2026-22609

Fickling is a Python pickling decompiler and static analyzer. Prior to version 0.1.7, the unsafe_imports() method in Fickling's static analyzer fails to flag several high-risk Python modules that can be used for arbitrary code execution. Malicious pickles importing these modules will not be detected as unsafe, allowing attackers to bypass Fickling's primary static safety checks. This issue has been patched in version 0.1.7.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/trailofbits/fickling/commit/29d5545e74b07766892c1f0461b801afccee4f91	Patch
https://github.com/trailofbits/fickling/commit/9a2b3f89bd0598b528d62c10a64c1986fcb09f66	Patch
https://github.com/trailofbits/fickling/commit/b793563e60a5e039c5837b09d7f4f6b92e6040d1	Patch
https://github.com/trailofbits/fickling/commit/eb299b453342f1931c787bcb3bc33f3a03a173f9	Patch
https://github.com/trailofbits/fickling/releases/tag/v0.1.7	Release Notes
https://github.com/trailofbits/fickling/security/advisories/GHSA-q5qq-mvfm-j35x	Exploit Vendor Advisory
https://github.com/trailofbits/fickling/security/advisories/GHSA-q5qq-mvfm-j35x	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:trailofbits:fickling:*:*:*:*:*:python:*:*

History

No history.

Information

Published : 2026-01-10 02:15

Updated : 2026-01-16 18:52

NVD link : CVE-2026-22609

Mitre link : CVE-2026-22609

CVE.ORG link : CVE-2026-22609

JSON object : View

Products Affected

trailofbits

fickling

CWE

CWE-184

Incomplete List of Disallowed Inputs

CWE-502

Deserialization of Untrusted Data

{"id": "CVE-2026-22609", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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", "exploitMaturity": "PROOF_OF_CONCEPT", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-01-10T02:15:50.050", "references": [{"url": "https://github.com/trailofbits/fickling/commit/29d5545e74b07766892c1f0461b801afccee4f91", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/trailofbits/fickling/commit/9a2b3f89bd0598b528d62c10a64c1986fcb09f66", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/trailofbits/fickling/commit/b793563e60a5e039c5837b09d7f4f6b92e6040d1", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/trailofbits/fickling/commit/eb299b453342f1931c787bcb3bc33f3a03a173f9", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/trailofbits/fickling/releases/tag/v0.1.7", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/trailofbits/fickling/security/advisories/GHSA-q5qq-mvfm-j35x", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/trailofbits/fickling/security/advisories/GHSA-q5qq-mvfm-j35x", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-184"}, {"lang": "en", "value": "CWE-502"}]}], "descriptions": [{"lang": "en", "value": "Fickling is a Python pickling decompiler and static analyzer. Prior to version 0.1.7, the unsafe_imports() method in Fickling's static analyzer fails to flag several high-risk Python modules that can be used for arbitrary code execution. Malicious pickles importing these modules will not be detected as unsafe, allowing attackers to bypass Fickling's primary static safety checks. This issue has been patched in version 0.1.7."}], "lastModified": "2026-01-16T18:52:26.077", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:trailofbits:fickling:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "0D11EA35-A440-4468-BC69-709AA3A18DD9", "versionEndExcluding": "0.1.7"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}