trailofbits fickling up to 0.1.6 unsafe_imports incomplete blacklist

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in trailofbits fickling up to 0.1.6. The impacted element is the function unsafe_imports. The manipulation results in incomplete blacklist. This vulnerability is known as CVE-2026-22609. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in trailofbits fickling up to 0.1.6. Affected is the function unsafe_imports. The manipulation with an unknown input leads to a incomplete blacklist vulnerability. CWE is classifying the issue as CWE-184. The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-22609 since 01/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1562.006.

Upgrading to version 0.1.7 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 29d5545e74b07766892c1f0461b801afccee4f91 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-1685). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Incomplete blacklist
CWE: CWE-184 / CWE-183 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: fickling 0.1.7
Patch: 29d5545e74b07766892c1f0461b801afccee4f91

Timelineinfo

01/07/2026 CVE reserved
01/10/2026 +3 days Advisory disclosed
01/10/2026 +0 days VulDB entry created
01/17/2026 +7 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-q5qq-mvfm-j35x
Status: Confirmed

CVE: CVE-2026-22609 (🔒)
GCVE (CVE): GCVE-0-2026-22609
GCVE (VulDB): GCVE-100-340380
EUVD: 🔒

Entryinfo

Created: 01/10/2026 10:15
Updated: 01/17/2026 05:46
Changes: 01/10/2026 10:15 (72), 01/10/2026 10:27 (1), 01/10/2026 11:15 (1), 01/17/2026 05:46 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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