CVE-2026-4360: Tarfile.extract() doesn't fully respect filter parameter

unknownCVE-2026-4360

CSIRTS triage

Other

What: The Tarfile.extract() method does not fully respect the filter parameter, leading to potential issues.
Who is affected: Users of the Tarfile module are affected.
Urgency: Remediation urgency is unclear due to unknown severity and exploitation status.
Action: Review usage of Tarfile.extract() and apply any available updates.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4360

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-43600.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-4360	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownVulnerability in CPython (July 2, 2026)cert-fr-avis
unknownCVE-2026-4360: In the Tarfile.extract() function, the filter parameter is not passed properly when extracting …nvd

Recent advisories for Tarfile.extract

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-4360: In the Tarfile.extract() function, the filter parameter is not passed properly when extracting …nvd · 2026-06-30