CVE-2026-3219

CVE-2026-3219 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.6. 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-434.

Key facts

Description

pip handles concatenated tar and ZIP files as ZIP files regardless of filename or whether a file is both a tar and ZIP file. This behavior could result in confusing installation behavior, such as installing "incorrect" files according to the filename of the archive. New behavior only proceeds with installation if the file identifies uniquely as a ZIP or tar archive, not as both.

Frequently asked questions

What is CVE-2026-3219?
pip handles concatenated tar and ZIP files as ZIP files regardless of filename or whether a file is both a tar and ZIP file. This behavior could result in confusing installation behavior, such as installing "incorrect" files according to the filename of the archive. New behavior only proceeds with installation if the file identifies uniquely as a ZIP or tar archive, not as both.
How severe is CVE-2026-3219?
CVE-2026-3219 has a CVSS 4.0 base score of 4.6, rated medium severity.
Is CVE-2026-3219 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-3219?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3219 have an EU (EUVD) identifier?
Yes. CVE-2026-3219 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23866.
When was CVE-2026-3219 published?
CVE-2026-3219 was published on 2026-04-20 and last updated on 2026-06-17.

References

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

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