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CVE-2026-6879 on CTRL-OS 26.05

Aliases: CVE-2026-6879

Packages: python311, python312, python313, python314, python315

Status: Plausible

Advisory Information

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.

Updates

2026-07-30 18:16 CEST

Metadata changes:

  • Status for package python311: “Plausible”
  • Status for package python312: “Plausible”
  • Status for package python313: “Plausible”
  • Status for package python314: “Plausible”
  • Status for package python315: “Plausible”

2026-07-30 18:01 CEST

Metadata changes:

  • Status for package python311: “New”
  • Status for package python312: “New”
  • Status for package python313: “New”
  • Status for package python314: “New”
  • Status for package python315: “New”