CVE-2025-63950

An insecure deserialization vulnerability exists in the download.php script of the to3k Twittodon application through commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). The 'obj' parameter receives base64-encoded data that is passed directly to the unserialize() function without validation. This allows a remote, unauthenticated attacker to inject arbitrary PHP objects, leading to a denial of service.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-2025-63950.md	Exploit Third Party Advisory
https://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-pending-Deserialization.md	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:tomaszdunia:twittodon:*:*:*:*:*:*:*:*

History

13 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de deserialización insegura existe en el script download.php de la aplicación to3k Twittodon a través del commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). El parámetro 'obj' recibe datos codificados en base64 que se pasan directamente a la función unserialize() sin validación. Esto permite a un atacante remoto y no autenticado inyectar objetos PHP arbitrarios, lo que lleva a una denegación de servicio.

Information

Published : 2025-12-18 21:15

Updated : 2026-10-13 11:10

NVD link : CVE-2025-63950

Mitre link : CVE-2025-63950

CVE.ORG link : CVE-2025-63950

JSON object : View

Products Affected

tomaszdunia

twittodon

CWE

CWE-502

Deserialization of Untrusted Data

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