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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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:79704390b5401f71b1a5183bca7a0838771928018d1f4ffc4b53fb1b8a1bb00b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"collectionURL":"https://pypi.org/project/pip","defaultStatus":"unaffected","packageName":"pip","product":"pip","repo":"https://github.com/pypa/pip","vendor":"Python Packaging Authority","versions":[{"lessThan":"26.1","status":"affected","version":"0","versionType":"python"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b0f5f8e5c725f7f457fb0a9681ed01939f9c81a3151aec0950d38166b86cee54 · sha256:e51d0408142bfbac… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.6,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b0f5f8e5c725f7f457fb0a9681ed01939f9c81a3151aec0950d38166b86cee54 · sha256:e51d0408142bfbac… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-434","description":"CWE-434 Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b0f5f8e5c725f7f457fb0a9681ed01939f9c81a3151aec0950d38166b86cee54 · sha256:e51d0408142bfbac… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/04/20/8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0f5f8e5c725f7f457fb0a9681ed01939f9c81a3151aec0950d38166b86cee54 · sha256:e51d0408142bfbac… · /containers/adp/1/references/0
{"tags":["patch"],"url":"https://github.com/pypa/pip/pull/13870"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0f5f8e5c725f7f457fb0a9681ed01939f9c81a3151aec0950d38166b86cee54 · sha256:e51d0408142bfbac… · /containers/cna/references/0
{"tags":["vendor-advisory"],"url":"https://mail.python.org/archives/list/security-announce@python.org/thread/QAJ5JIVWWCAJ4EZL2FP5MOOW35JS7LRJ/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0f5f8e5c725f7f457fb0a9681ed01939f9c81a3151aec0950d38166b86cee54 · sha256:e51d0408142bfbac… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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