CVE-2026-15310
zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits
Description
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.
No summary for this CVE yet.
Weaknesses
Affected Products
Python Software Foundation
oss-project·USaka psf
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Impact
References
https://github.com/python/cpython/commit/1b424c0178a01e155fd0267dc28a8fc1159b33a8
github.com
https://github.com/python/cpython/commit/31980e84b9a708424a0a1dfecde3fc991e313f89
github.com
https://github.com/python/cpython/commit/9d167992b59cf5e23c66b9ed742b13f5925f7d70
github.com
and 6 more references View all →
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