{"id":"BIT-python-min-2026-15310","summary":"zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits","details":"When decompressing crafted zip files using the bzip/LZMA/Zstandard \n\ncompressions, Python could use an attacker-controlled size to \n\npre-allocate memory, possibly resulting in memory exhaustion.","aliases":["BIT-libpython-2026-15310","BIT-python-2026-15310","CVE-2026-15310","PSF-2026-39"],"modified":"2026-10-05T14:30:04.445600780Z","published":"2026-09-11T05:56:22.303Z","database_specific":{"severity":"Low","cpes":["cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://github.com/python/cpython/commit/1b424c0178a01e155fd0267dc28a8fc1159b33a8"},{"type":"WEB","url":"https://github.com/python/cpython/commit/31980e84b9a708424a0a1dfecde3fc991e313f89"},{"type":"WEB","url":"https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7d4"},{"type":"WEB","url":"https://github.com/python/cpython/issues/156002"},{"type":"WEB","url":"https://github.com/python/cpython/pull/156003"},{"type":"WEB","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXURX2WZGKGNA4ANYBQS2VZRYQ5JNK/"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15310"},{"type":"WEB","url":"https://github.com/python/cpython/commit/e2311cfb3dd518f008f312fe0631f4f7490d237a"},{"type":"WEB","url":"https://github.com/python/cpython/commit/f507e6946a3194e83e1d7b8ee6e14567175e46de"},{"type":"WEB","url":"https://github.com/python/cpython/commit/9d167992b59cf5e23c66b9ed742b13f5925f7d70"},{"type":"WEB","url":"https://github.com/python/cpython/commit/09a2e7e6678b4f65449e7ad8f112c48f944591e2"},{"type":"WEB","url":"https://github.com/python/cpython/commit/dcdd406ddbfc4cb29b24c3df17cbabe21d316ce1"},{"type":"WEB","url":"https://github.com/python/cpython/commit/6257029de42ef89b67f3d20137de87d43e197530"},{"type":"WEB","url":"https://github.com/python/cpython/commit/c2bfbcdd1a11690507a10bc0998f95b8dc6b6fac"}],"affected":[{"package":{"name":"python-min","ecosystem":"Bitnami","purl":"pkg:bitnami/python-min"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.10.22"},{"introduced":"3.11.0"},{"fixed":"3.11.17"},{"introduced":"3.12.0"},{"fixed":"3.12.15"},{"introduced":"3.13.0"},{"fixed":"3.13.16"},{"introduced":"3.14.0"},{"fixed":"3.14.8"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/python-min/BIT-python-min-2026-15310.json"},"severity":[{"type":"CVSS_V4","score":"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"}]}],"schema_version":"1.9.0"}