Vulnerability Description
lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML input to read local files. Setting the resolve_entities option explicitly to resolve_entities='internal' or resolve_entities=False disables the local file access. This vulnerability is fixed in 6.1.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lxml | Lxml | < 6.1.0 |
Related Weaknesses (CWE)
References
- https://bugs.launchpad.net/lxml/+bug/2146291ExploitIssue TrackingThird Party Advisory
- https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfwMitigationVendor Advisory
FAQ
What is CVE-2026-41066?
CVE-2026-41066 is a vulnerability with a CVSS score of 7.5 (HIGH). lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML inp...
How severe is CVE-2026-41066?
CVE-2026-41066 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-41066?
Check the references section above for vendor advisories and patch information. Affected products include: Lxml Lxml.