CVE-2026-49477

01/תיאור (מקור, אנגלית)

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.

02/מוצרים מושפעים

facelessuser: soup sieve

03/קישורים4

• github.com/facelessuser/soupsieve/security/advisories/GHSA-836‮… ExploitVendor Advisory
• github.com/facelessuser/soupsieve/security/advisories/GHSA-836‮… ExploitVendor Advisory
• github.com/facelessuser/soupsieve/commit/eb4397618709186c10940‮… Patch
• github.com/facelessuser/soupsieve/releases/tag/2.8.4 Release Notes