CVE-2026-82049: falha de alta gravidade em Python Software Foundation CPython
tarfile extraction filters allow file modification and content disclosure via hard link to symlink
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.4epss 0.2%
In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Produtos afetados
Python Software Foundation · CPythonCVEs relacionadas — Python Software Foundation CPython
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Referências
https://github.com/python/cpython/commit/197663d63afed27f66e10e23c194e8a634e60913https://github.com/python/cpython/commit/28f315486b3da0352b9a1de1c3c97f4127ba4771https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daecahttps://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0dhttps://github.com/python/cpython/commit/c66df4e70435d257fd488b35ea129c6f317433a8https://github.com/python/cpython/commit/cc1689830c6b9aaddded2fb9f2fe8116867e2c0ehttps://github.com/python/cpython/commit/cccc7ec30212dba2abef53ce4a2bed112ddb690chttps://github.com/python/cpython/issues/157190https://github.com/python/cpython/pull/157191https://mail.python.org/archives/list/security-announce@python.org/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/http://www.openwall.com/lists/oss-security/2026/09/14/27