CVE-2026-75757: Unanchored Cookie Regex Lookup
Matching cookie names with an unanchored regular expression allows sibling subdomains or malicious actors to shadow cookies using prefixed cookie names (e.g., matching 'xname=' when searching for 'name='). Match cookie names with exact string equality or anchor with boundary delimiters such as '(?:^|;\\s*)'.
JSgreprules fetch cve-2026-75757-unanchored-cookie-regex-lookup --engine opengrepDescription
Matching cookie names with an unanchored regular expression allows sibling subdomains or malicious actors to shadow cookies using prefixed cookie names (e.g., matching 'xname=' when searching for 'name='). Match cookie names with exact string equality or anchor with boundary delimiters such as '(?:^|;\\s*)'.
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