CVE-2026-27192: Insecure Origin Validation Startswith
Validating an origin or domain by checking if a string starts with an allowed origin is insecure. An attacker can bypass this check by registering a domain that shares the same prefix (e.g., `https://target.com.attacker.com` starts with `https://target.com`). Parse the input using `new URL()` and check for exact equality against `url.origin` or `url.hostname
TSgreprules fetch cve-2026-27192-insecure-origin-validation-startswith --engine opengrepDescription
Validating an origin or domain by checking if a string starts with an allowed origin is insecure. An attacker can bypass this check by registering a domain that shares the same prefix (e.g., `https://target.com.attacker.com` starts with `https://target.com`). Parse the input using `new URL()` and check for exact equality against `url.origin` or `url.hostname
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