SEPTEMBER 15, 2026
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Case File

CVE-2026-6879

LOW · CVSS 2 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-28 · Last synced 2026-08-27

CyberRota Analysis

AI-Generated

The vulnerability affects the `Element.findall()` and `Element.iterfind()` methods in XML processing, which can lead to significant performance degradation due to an O(n^2) time complexity when using XPath index predicates on XML documents with numerous same-tag siblings. This can result in denial-of-service conditions as the processing time increases dramatically with larger datasets. Developers and organizations utilizing these XML processing methods in performance-critical applications should prioritize addressing this issue to mitigate potential slowdowns or service interruptions.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-6879
Severity
LOW
CVSS
2
EPSS
0.37%

Original NVD 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.