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CVE-2026-15310 zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits

🗓️ 25 Aug 2026 15:07:58Reported by PSFType 
cvelist
 cvelist
🔗 www.cve.org👁 221 Views

Python zipfile bzip2/LZMA/Zstd decompression allocates unbounded memory enabling exhaustion.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-15310
25 Aug 202615:07
–alpinelinux
cgr
Chainguard
CVE-2026-15310 vulnerabilities
25 Sep 202608:54
–cgr
circl
Circl
CVE-2026-15310
27 Aug 202612:15
–circl
cve
CVE
CVE-2026-15310
25 Aug 202615:07
–cve
debiancve
Debian CVE
CVE-2026-15310
25 Aug 202615:07
–debiancve
euvd
EUVD
EUVD-2026-65519
25 Aug 202615:07
–euvd
fedora
Fedora
[SECURITY] Fedora 43 Update: python3.12-3.12.15-1.fc43
6 Oct 202601:06
–fedora
fedora
Fedora
[SECURITY] Fedora 44 Update: python3.12-3.12.15-1.fc44
4 Oct 202601:43
–fedora
mscve
Microsoft CVE
zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits
29 Aug 202608:08
–mscve
nvd
NVD
CVE-2026-15310
25 Aug 202615:16
–nvd
Rows per page
[
  {
    "defaultStatus": "unaffected",
    "product": "CPython",
    "repo": "https://github.com/python/cpython",
    "vendor": "Python Software Foundation",
    "versions": [
      {
        "version": "0",
        "lessThan": "3.10.22",
        "status": "affected",
        "versionType": "python"
      },
      {
        "version": "3.11.0",
        "lessThan": "3.11.17",
        "status": "affected",
        "versionType": "python"
      },
      {
        "version": "3.12.0",
        "lessThan": "3.12.15",
        "status": "affected",
        "versionType": "python"
      },
      {
        "version": "3.13.0",
        "lessThan": "3.13.16",
        "status": "affected",
        "versionType": "python"
      },
      {
        "version": "3.14.0",
        "lessThan": "3.14.8",
        "status": "affected",
        "versionType": "python"
      },
      {
        "version": "3.15.0a1",
        "lessThan": "3.15.0rc2",
        "status": "affected",
        "versionType": "python"
      }
    ]
  }
]

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