High severity7.5NVD Advisory· Published May 11, 2026· Updated Aug 14, 2026
CVE-2026-7210
CVE-2026-7210
Description
xml.parsers.expat and xml.etree.ElementTree use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
25(expand)+ 11 more
- (no CPE)
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:*range: <3.13.14
- cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha3:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha4:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha5:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha6:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha7:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha8:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:beta1:*:*:*:*:*:*
- (no CPE)range: before libexpat 2.8.0
- osv-coords13 versionspkg:apk/chainguard/python-3.13pkg:apk/chainguard/python-3.14pkg:apk/wolfi/python-3.13pkg:apk/wolfi/python-3.14pkg:bitnami/libpythonpkg:bitnami/pythonpkg:bitnami/python-minpkg:rpm/opensuse/python310&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python311&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python312&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python313&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python314&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python315&distro=openSUSE%20Tumbleweed
< 3.13.14-r0+ 12 more
- (no CPE)range: < 3.13.14-r0
- (no CPE)range: < 3.14.6-r1
- (no CPE)range: < 3.13.14-r0
- (no CPE)range: < 3.14.6-r1
- (no CPE)range: < 3.13.14
- (no CPE)range: < 3.13.14
- (no CPE)range: < 3.13.14
- (no CPE)range: < 3.10.20-7.1
- (no CPE)range: < 3.11.15-8.1
- (no CPE)range: < 3.12.13-8.1
- (no CPE)range: < 3.13.14-1.1
- (no CPE)range: < 3.14.6-1.1
- (no CPE)range: < 3.15.0~b2-1.1
Patches
Vulnerability mechanics
References
12- github.com/python/cpython/commit/24b8f12544468e4cedf5bfbe25442fcd495391e4nvdPatch
- github.com/python/cpython/commit/3573b3b1ecbd99030a0b18658e1bfece771b2566nvdPatch
- github.com/python/cpython/commit/eeea765cb9d8f1fc3d8918b272ac3c477983f27anvdPatch
- github.com/python/cpython/commit/fc9b11ff49cbc82e6f917d07a61517a2b5f3145fnvdPatch
- github.com/python/cpython/pull/149023nvdIssue TrackingPatch
- www.openwall.com/lists/oss-security/2026/05/11/13nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2026/05/11/8nvdMailing ListThird Party Advisory
- mail.python.org/archives/list/[email protected]/thread/PNY5OMBDPM2FRUZTWFFPJ6LISWKV627K/nvdMailing ListThird Party Advisory
- github.com/python/cpython/issues/149018nvdIssue Tracking
- github.com/python/cpython/commit/cbaecf9f16da611a646d507c1cbca265c588fc56nvd
- github.com/python/cpython/commit/e37df2a6a71d6538698e2d3188a7c345b827640bnvd
- github.com/python/cpython/commit/ea70712d1a8508e14e9677d44f838dab04dc0286nvd
News mentions
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