CVE Watch12 nov 2026

CVE-2026-126192

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.10, matching a developer-authored selector that p

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 12 nov 2026 · Última mod.: 12 nov 2026 · CWE-400 · CWE-407

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.10, matching a developer-authored selector that places the general sibling combinator inside :has() repeatedly scans each candidate element's following siblings when the right-hand side is absent, producing quadratic work on attacker-controlled HTML. Applications that evaluate a fixed selector such as div:has(a ~ b) over untrusted markup can have a worker occupied for minutes by a small document, while the adjacent sibling form and trusted-only document processing are not affected in the same way. This issue is fixed in version 2.10.

Referencias oficiales

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