CVE-2026-7210
`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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.3
- CVSS 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
- EPSS probability
- 0.67%
- CWE
- CWE-331
- Published
- 2026-05-11
- Last modified
- 2026-08-14
Affected products
- Python Software Foundation CPython
- Python Software Foundation CPython
- Python Software Foundation CPython
- Python Software Foundation CPython
- Python Software Foundation CPython
Weakness type
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