There is a LOW severity vulnerability affecting CPython.
`Element.findall()` and fully-consumed `Element.iterfind()` exhibit `O(n^2)` time complexity when using XPath index predicates (e.g. `[1]`, `[last()]`, `[last()-N]`) on XML documents with many same-tag siblings. `Element.find()` is only affected when the first match is near the end of the sibling list, such as with `[last()]` or `[last()-N]`; `.//item[1]` short-circuits after the first match.
Please see the linked CVE ID for the latest information on affected versions:
* https://www.cve.org/CVERecord?id=CVE-2026-6879 * https://github.com/python/cpython/pull/152676 _______________________________________________ Security-announce mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/security-announce.python.org Member address: [email protected]
