CVE-2026-11972
highpriority · track · 0EPSS 0.007 · 54 %ileEUFRUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–8.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (21)
Products and version ranges known to be affected.
advisories (5)
Vendor and ecosystem advisories describing this.
- BIT-libpython-2026-11972tarfile opened in streaming mode mishandles EOF2026-07-30vendor · osvUS
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.
- BIT-python-2026-11972tarfile opened in streaming mode mishandles EOF2026-07-30vendor · osvUS
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.
- BIT-python-min-2026-11972tarfile opened in streaming mode mishandles EOF2026-07-30vendor · osvUS
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.
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
- PSF-2026-312026-06-23vendor · osvUS
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.
also known as (7)
Other names and identifiers for this entity.
- CNNVD-2026-62390079cnnvd
- EUVD-2026-38630enisa_euvd
- GHSA-wqxf-pjxh-hh4henisa_euvd
- BIT-libpython-2026-11972osv
- BIT-python-2026-11972osv
- BIT-python-min-2026-11972osv
- PSF-2026-31osv
sources
Which sources assert this record, and when.
references (23)
External citations — patches, advisories, analysis.
- https://github.com/python/cpython/issues/151981cnnvd
- https://github.com/python/cpython/pull/151982cnnvd
- https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/cnnvd
- https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9enisa_euvd
- https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365enisa_euvd
- https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21enisa_euvd
- https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdecenisa_euvd
- https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192enisa_euvd
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