Infinite loop when iterating over zip archive entry names from zipfile.Path

Description

There is a HIGH severity vulnerability affecting the CPython "zipfile" module affecting "zipfile.Path". Note that the more common API "zipfile.ZipFile" class is unaffected. When iterating over names of entries in a zip archive (for example, methods of "zipfile.Path" like "namelist()", "iterdir()", etc) the process can be put into an infinite loop with a maliciously crafted zip archive. This defect applies when reading only metadata or extracting the contents of the zip archive. Programs that are not handling user-controlled zip archives are not affected.

Timeline

Scores

EPSS (exploitation in 30 days)

1.3% · top 30% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.

Weakness

• CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') (opens in a new tab)All about CWE-835 and its CVEs

Affected products

• Python Software Foundation · CPython

  • affected < 3.8.20
  • affected 3.9.0 – < 3.9.20
  • affected 3.10.0 – < 3.10.15
  • affected 3.11.0 – < 3.11.10
  • affected 3.12.0 – < 3.12.6
  • affected 3.13.0a1 – < 3.13.0rc2

References (22)

• https://mail.python.org/archives/list/[email protected]/thread/GNFCKVI4TCATKQLALJ5SN4L4CSPSMILU/ (opens in a new tab)vendor-advisory
• https://github.com/python/cpython/pull/122906 (opens in a new tab)patch
• https://github.com/python/cpython/issues/122905 (opens in a new tab)issue-tracking
• https://github.com/python/cpython/commit/795f2597a4be988e2bb19b69ff9958e981cb894e (opens in a new tab)patch
• https://github.com/python/cpython/commit/8c7348939d8a3ecd79d630075f6be1b0c5b41f64 (opens in a new tab)patch
• https://github.com/python/cpython/commit/dcc5182f27c1500006a1ef78e10613bb45788dea (opens in a new tab)patch
• https://github.com/python/cpython/commit/e0264a61119d551658d9445af38323ba94fc16db (opens in a new tab)patch
• https://github.com/python/cpython/issues/123270 (opens in a new tab)issue-tracking
• https://github.com/python/cpython/commit/2231286d78d328c2f575e0b05b16fe447d1656d6 (opens in a new tab)patch
• https://github.com/python/cpython/commit/7e8883a3f04d308302361aeffc73e0e9837f19d4 (opens in a new tab)patch
• https://github.com/python/cpython/commit/95b073bddefa6243effa08e131e297c0383e7f6a (opens in a new tab)patch
• https://github.com/python/cpython/commit/7bc367e464ce50b956dd232c1dfa1cad4e7fb814 (opens in a new tab)patch
• https://github.com/python/cpython/commit/962055268ed4f2ca1d717bfc8b6385de50a23ab7 (opens in a new tab)patch
• https://github.com/python/cpython/commit/fc0b8259e693caa8400fa8b6ac1e494e47ea7798 (opens in a new tab)patch
• https://github.com/python/cpython/commit/0aa1ee22ab6e204e9d3d0e9dd63ea648ed691ef1 (opens in a new tab)patch
• https://github.com/python/cpython/commit/9cd03263100ddb1657826cc4a71470786cab3932 (opens in a new tab)patch
• http://www.openwall.com/lists/oss-security/2024/08/22/1 (opens in a new tab)
• http://www.openwall.com/lists/oss-security/2024/08/22/4 (opens in a new tab)
• http://www.openwall.com/lists/oss-security/2024/08/23/1 (opens in a new tab)
• http://www.openwall.com/lists/oss-security/2024/08/23/2 (opens in a new tab)
• https://security.netapp.com/advisory/ntap-20241011-0010/ (opens in a new tab)
• https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-8088](https://trackcve.app/badge/CVE-2024-8088.svg)](https://trackcve.app/cve/CVE-2024-8088)

Record last updated 3 Nov 2025, 22:32 UTC.