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.
Metrics
Affected Vendors & Products
References
History
Fri, 04 Sep 2026 01:15:00 +0000
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Tue, 25 Aug 2026 18:30:00 +0000
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ssvc
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Tue, 25 Aug 2026 17:30:00 +0000
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Python
Python cpython |
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Python
Python cpython |
Tue, 25 Aug 2026 15:15:00 +0000
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| 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. | |
| Title | zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits | |
| Weaknesses | CWE-400 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: PSF
Published: 2026-08-25T15:07:58.054Z
Updated: 2026-09-04T00:35:36.029Z
Reserved: 2026-07-09T17:39:12.652Z
Link: CVE-2026-15310
Updated: 2026-08-25T17:39:17.557Z
Status : Awaiting Analysis
Published: 2026-08-25T15:16:30.027
Modified: 2026-09-04T01:17:21.560
Link: CVE-2026-15310
No data.