CVE-2026-11972 (GCVE-0-2026-11972)

Vulnerability from cvelistv5 – Published: 2026-06-23 22:02 – Updated: 2026-06-30 15:13
VLAI?
Title
tarfile opened in streaming mode mishandles EOF
Summary
When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.
Severity ?
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
Assigner
PSF
References
Impacted products
Vendor Product Version
Python Software Foundation CPython Affected: 0 , < 3.15.0 (python)
Create a notification for this product.
Credits
Ryan Hileman (https://github.com/lunixbochs) Petr Viktorin (https://github.com/encukou) Stan Ulbrych (https://github.com/StanFromIreland)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.