2.1

CVE-2026-15310

zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits

When decompressing crafted zip files using the bzip/LZMA/Zstandard 

compressions, Python could use an attacker-controlled size to 

pre-allocate memory, possibly resulting in memory exhaustion.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerPython Software Foundation
≫
Produkt CPython
Default Statusunaffected
Version 0
Version < 3.10.22
Status affected
Version 3.11.0
Version < 3.11.17
Status affected
Version 3.12.0
Version < 3.12.15
Status affected
Version 3.13.0
Version < 3.13.16
Status affected
Version 3.14.0
Version < 3.14.8
Status affected
Version 3.15.0a1
Version < 3.15.0rc2
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.3% 0.225
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
cna@python.org 2.1 0 0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

https://github.com/python/cpython/issues/156002
https://github.com/python/cpython/pull/156003
https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXURX2WZGKGNA4ANYBQS2VZRYQ5JNK/
https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7d4
https://github.com/python/cpython/commit/1b424c0178a01e155fd0267dc28a8fc1159b33a8
https://github.com/python/cpython/commit/31980e84b9a708424a0a1dfecde3fc991e313f89
https://github.com/python/cpython/commit/e2311cfb3dd518f008f312fe0631f4f7490d237a
https://github.com/python/cpython/commit/f507e6946a3194e83e1d7b8ee6e14567175e46de
https://github.com/python/cpython/commit/9d167992b59cf5e23c66b9ed742b13f5925f7d70
https://github.com/python/cpython/commit/dcdd406ddbfc4cb29b24c3df17cbabe21d316ce1
https://github.com/python/cpython/commit/09a2e7e6678b4f65449e7ad8f112c48f944591e2
https://github.com/python/cpython/commit/6257029de42ef89b67f3d20137de87d43e197530
https://github.com/python/cpython/commit/c2bfbcdd1a11690507a10bc0998f95b8dc6b6fac