How severe is CVE-2026-22609?

CVE-2026-22609 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-22609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22609?

CVE-2026-22609 affects Trailofbits Fickling. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22609?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-22609 have an EU (EUVD) identifier?

Yes. CVE-2026-22609 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1685.

When was CVE-2026-22609 published?

CVE-2026-22609 was published on 2026-01-10 and last updated on 2026-06-17.

CVE-2026-22609

CVE-2026-22609 is a high-severity vulnerability in Trailofbits Fickling with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-184.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.9
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1685
Weakness: CWE-184
Affected product: Trailofbits Fickling
Published: 2026-01-10
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-22609?: CVE-2026-22609 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-22609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22609?: CVE-2026-22609 affects Trailofbits Fickling. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-22609 have an EU (EUVD) identifier?: Yes. CVE-2026-22609 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1685.
When was CVE-2026-22609 published?: CVE-2026-22609 was published on 2026-01-10 and last updated on 2026-06-17.

References

Affected products (1)

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

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