Name: CVE-2026-7210: Insufficient Entropy
Creator: Rapid7
Published: 2026-05-11T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-7210, CWE-331, CVSS 7.5, EPSS 0.00672

`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.

CVSS Details

CVSS 4.0 Base Score: 6.3 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade python3	Aug 14, 2026	May 11, 2026
Amazon_linux_2023	—	Upgrade python3.11-idleUpgrade python3.12-debugUpgrade python3.12-idleUpgrade python3.12Upgrade python3.11-libsUpgrade python3.11-testUpgrade python3.12-develUpgrade python3.12-testUpgrade python3.12-libsUpgrade python3.11-debugsourceUpgrade python3.12-tkinterUpgrade python3.12-debugsourceUpgrade python3.11-debuginfoUpgrade python3.12-debuginfoUpgrade python3.11Upgrade python3.11-debugUpgrade python3.11-tkinterUpgrade python3.11-devel	Jul 8, 2026	May 11, 2026
Ibm Aix	—	Apply the fix or workaround for python_advisory21	Sep 15, 2026	Sep 15, 2026
Redhat_linux	—	No solution exists	Jul 17, 2026	May 11, 2026
Ubuntu	—	Upgrade python2.7-doc (Ubuntu Pro)Upgrade libpython3.5-stdlib (Ubuntu Pro)Upgrade libpython2.7 (Ubuntu Pro)Upgrade libpython3.5-testsuite (Ubuntu Pro)Upgrade python2.7-dev (Ubuntu Pro)Upgrade libpython2.7-dev (Ubuntu Pro)Upgrade python3.5 (Ubuntu Pro)Upgrade idle-python3.5 (Ubuntu Pro)Upgrade python2.7-minimal (Ubuntu Pro)Upgrade python3.5-minimal (Ubuntu Pro)Upgrade libpython2.7-minimal (Ubuntu Pro)Upgrade python3.5-examples (Ubuntu Pro)Upgrade python3.5-dev (Ubuntu Pro)Upgrade libpython3.5-minimal (Ubuntu Pro)Upgrade libpython2.7-testsuite (Ubuntu Pro)Upgrade python2.7 (Ubuntu Pro)Upgrade libpython2.7-stdlib (Ubuntu Pro)Upgrade libpython3.5-dev (Ubuntu Pro)Upgrade libpython3.5 (Ubuntu Pro)Upgrade python3.5-venv (Ubuntu Pro)Upgrade python2.7-examples (Ubuntu Pro)Upgrade idle-python2.7 (Ubuntu Pro)Upgrade python3.5-doc (Ubuntu Pro)	Jul 12, 2026	Jul 9, 2026
Vmware Photon_os	—	Use 'tdnf update' to upgrade all packages to the latest version.	Jun 19, 2026	May 11, 2026

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CVSS Details

Covered by Rapid7

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