CVE-2025-9648
Denial of Service in CivetWeb
Description
A vulnerability in the CivetWeb library's function mg_handle_form_request allows remote attackers to trigger a denial of service (DoS) condition. By sending a specially crafted HTTP POST request containing a null byte in the payload, the server enters an infinite loop during form data parsing. Multiple malicious requests will result in complete CPU exhaustion and render the service unresponsive to further requests. This issue was fixed in commit 782e189. This issue affects only the library, standalone executable pre-built by vendor is not affected.
No summary for this CVE yet.
Weaknesses
Affected Products
CivetWeb
oss-project
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
https://cert.pl/en/posts/2025/09/CVE-2025-9648
cert.pl
https://github.com/civetweb/civetweb
github.com
https://github.com/civetweb/civetweb/issues/1348
github.com
and 1 more references View all →
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