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CVE-2026-27637 affects FreeScout, a PHP Laravel-based help desk and shared inbox application, in versions prior to 1.8.206. The vulnerability is in FreeScout's TokenAuth middleware, which generates authentication tokens using a predictable formula: MD5(user_id + created_at + APP_KEY). Because the token is deterministically derived from user attributes and the Laravel APP_KEY, it is static and does not expire or rotate. If an attacker obtains the APP_KEY through a common Laravel secret-exposure vector, they can compute a valid authentication token for any target account, including the administrator, without knowing the user's password. The issue can be exploited independently for account takeover or chained with CVE-2026-27636 for broader compromise. Version 1.8.206 fixes the vulnerability.
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APP_KEY by eliminating common exposure paths such as exposed .env files, debug endpoints, misconfigured web roots, or leaked configuration data. Restrict access to application secrets, monitor for suspicious token-based authentication activity and unexpected administrative actions, and investigate signs of account misuse. Because the token is static, assume previously exposed keys may have enabled persistent unauthorized access until secrets are rotated.Patch, then assume compromise.
APP_KEY if exposure is suspected or confirmed, invalidate any authentication material derived from the old key, and review for unauthorized access or administrative changes. Also rotate any other credentials or secrets that may have been exposed through related compromise.No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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