CVE-2026-15310

Summary

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.

Affected Software

Weaknesses

• CWE-400: CWE-400

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/python/cpython/pull/156003
• https://github.com/python/cpython/issues/156002
• https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXURX2WZGKGNA4ANYBQS2VZRYQ5JNK/
• https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7d4

• ←Previous
• Next→