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Python CVE-2026-22609

HIGH
Incomplete List of Disallowed Inputs (CWE-184)
2026-01-10 security-advisories@github.com GHSA-q5qq-mvfm-j35x
7.8
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 16, 2026 - 18:52 vuln.today
Public exploit code
Patch released
Jan 16, 2026 - 18:52 nvd
Patch available
CVE Published
Jan 10, 2026 - 02:15 nvd
HIGH 7.8

DescriptionGitHub Advisory

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.

AnalysisAI

Fickling's static analyzer before version 0.1.7 fails to detect several dangerous Python modules in pickled objects, enabling attackers to craft malicious pickles that bypass safety checks and achieve arbitrary code execution. This vulnerability affects users relying on Fickling to validate untrusted serialized Python objects for safety. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Create malicious pickle with high-risk module imports
Exploit
User analyzes pickle with vulnerable Fickling version
Execution
unsafe_imports() fails to detect dangerous modules
Impact
Attacker executes arbitrary code during pickle deserialization

Vulnerability AssessmentAI

Exploitation User must analyze an untrusted pickle file using Fickling versions prior to 0.1.7. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

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CVE-2026-22609 vulnerability details – vuln.today

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