CVE-2026-6879
Severity CVSS v4.0:
LOW
Type:
Unavailable / Other
Publication date:
28/07/2026
Last modified:
28/07/2026
Description
`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.
Impact
Base Score 4.0
2.00
Severity 4.0
LOW