FreeRDP up to 3.28.9 HTTP Response http_response_recv_body resource consumption

Summaryinfo

A vulnerability was found in FreeRDP up to 3.28.9. It has been rated as problematic. This vulnerability affects the function http_response_recv_body of the component HTTP Response. Performing a manipulation results in resource consumption. This vulnerability is known as CVE-2026-67297. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in FreeRDP up to 3.28.9. This affects the function http_response_recv_body of the component HTTP Response. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

FreeRDP before 3.29.0 fails to enforce the RESPONSE_SIZE_LIMIT when processing Transfer-Encoding: chunked HTTP responses in http_response_recv_body(). Attackers controlling a malicious RD Gateway endpoint can send oversized chunked response bodies to exhaust client memory resources without triggering the configured size limit.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-67297 since 07/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 3.29.0 eliminates this vulnerability.

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Productinfo

Type

• Remote Access Software

Name

• FreeRDP

Version

• 3.28.0
• 3.28.1
• 3.28.2
• 3.28.3
• 3.28.4
• 3.28.5
• 3.28.6
• 3.28.7
• 3.28.8
• 3.28.9

License

• open-source

Website

• Product: https://github.com/FreeRDP/FreeRDP/

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