CVE-2026-73529

Plainpad through 1.1.1, fixed in commit d3823fc, contains a missing rate limiting vulnerability that allows unauthenticated attackers to send unbounded login requests to the POST /v1/sessions endpoint due to dead code in App\Http\Kernel.php that is never instantiated under the Laravel 11+ skeleton, leaving the API throttle configuration unattached to any route. Attackers can exploit this by sending unlimited credential attempts with no lockout or CAPTCHA enforcement, and additionally trigger CPU exhaustion by forcing repeated bcrypt comparisons on each request.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/alextselegidis/plainpad/commit/d3823fc595b5d8f842a6fd7dfe49b7852a10fdac
https://www.vulncheck.com/advisories/plainpad-missing-rate-limiting-via-post-v1-sessions

Configurations

No configuration.

History

22 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Plainpad hasta la versión 1.1.1, corregido en el commit d3823fc, contiene una vulnerabilidad de falta de limitación de tasa que permite a atacantes no autenticados enviar solicitudes de inicio de sesión ilimitadas al endpoint POST /v1/sessions debido a código muerto en App\Http\Kernel.php que nunca se instancia bajo el esqueleto de Laravel 11+, dejando la configuración de limitación de la API sin adjuntar a ninguna ruta. Los atacantes pueden explotar esto enviando intentos de credenciales ilimitados sin bloqueo ni aplicación de CAPTCHA, y adicionalmente desencadenar el agotamiento de la CPU forzando comparaciones bcrypt repetidas en cada solicitud.

Information

Published : 2026-08-18 20:17

Updated : 2026-10-22 22:10

NVD link : CVE-2026-73529

Mitre link : CVE-2026-73529

CVE.ORG link : CVE-2026-73529

JSON object : View

Products Affected

No product.

CWE

CWE-307

Improper Restriction of Excessive Authentication Attempts

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