PT-2026-94386

Name of the Vulnerable Software and Affected Versions Soup Sieve versions prior to 2.9 Description An issue exists in the selector iter function within src/soupsieve/css parser.py where the raw selector is trimmed using RE WS END. Because this regular expression is anchored only at the end and us...

PT-2026-94387

Name of the Vulnerable Software and Affected Versions Soup Sieve versions prior to 2.9 Description A Regular Expression Denial of Service ReDoS exists in the selector parser located in src/soupsieve/css parser.py. The IDENTIFIER pattern uses adjacent quantified groups over overlapping character...

CVE-2026-49476: Uncontrolled Resource Consumption

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 allocates unbounded memory when compiling large comma-separated selector lists, allowing an attacker who can supply a crafted selector string to soupsieve.compile o...