CVE-2026-11972

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9
https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365
https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21
https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdec
https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192
https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896
https://github.com/python/cpython/commit/f5e2776ff0383a902c12acf2b703e7e951fc8438
https://github.com/python/cpython/issues/151981
https://github.com/python/cpython/pull/151982
https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-23 23:16

Updated : 2026-08-13 01:16

NVD link : CVE-2026-11972

Mitre link : CVE-2026-11972

CVE.ORG link : CVE-2026-11972

JSON object : View

Products Affected

No product.

CWE

CWE-252

Unchecked Return Value

CWE-606

Unchecked Input for Loop Condition

CWE-770

Allocation of Resources Without Limits or Throttling

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