CVE WATCH / VULNERABILITY DETAIL

CVE-2026-126189

MEDIUMCVSS 5.3NVD feed

Published 12 November 2026 · tracked since 13 November 2026

Description

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 4.0.1, Soup Sieve repeatedly searches descendant subtrees for each candidate evaluated by :has() and repeatedly reevaluates a parent containing :has(> ...) for each child, causing quadratic matching on deeply ne

References

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