CVE Watch15 jul 2026

CVE-2026-49477

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contain

CVSS

7.5

Alto

EPSS

0.6%

p45

KEV

—

Exploit Today

0-100

Publicado: 14 jul 2026 · Última mod.: 15 jul 2026 · CWE-400 · CWE-1333

EPSS · 30d

0.6%EPSS · 30 días0.6%

2026-07-152026-07-17

Descripción técnica

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in soupsieve/css_parser.py, allowing an attacker who can supply untrusted CSS selector strings to soupsieve.compile() or Beautiful Soup .select() / .select_one() to cause CPU exhaustion and denial of service. This issue is fixed in version 2.8.4.

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