🛡️ CVE-2026-7210 — libexpat
Description
The expat and elementtree parsers use insufficient entropy for XML hash-flooding protection
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.
Weakness class
CVE-2026-7210 is classified as CWE-331: Insufficient Entropy. A generator is seeded with too little randomness, narrowing the range of outputs an attacker must search.
Affected software
CVE-2026-7210 is recorded against 5 packages.
- libexpat (fixed in 2.8.0)
- libpython
- python
- python-min
- unknown
Timeline and source
Published on 11 May 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.
References
www.openwall.com (Web)
www.openwall.com (Web)
github.com (Web)
github.com (Web)
mail.python.org (Web)
nvd.nist.gov (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
CVE-2026-7210 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| libexpat | — | 2.8.0 |
| libpython | — | — |
| python | — | — |
| python-min | — | — |
| unknown | — | — |
Similar Threats
- High CVE-2024-45490
- Critical CVE-2024-45491
- High CVE-2024-28757
- High CVE-2023-52425
- Medium CVE-2023-52426
Exploit Protection
Are you running libexpat?
CVE-2026-7210 carries CVSS 9.8 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.
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