Security vulnerabilities and automated fixes for soupsieve issues
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A high-severity memory exhaustion vulnerability (CVE-2026-49476) was discovered in soupsieve 2.8.3, a CSS selector library used by BeautifulSoup in Python. An attacker who could influence CSS selector input could craft large comma-separated selector lists to exhaust system memory, causing denial of service. The fix upgrades soupsieve from 2.8.3 to 2.8.4 in the backend's `uv.lock` dependency file.