CVE-2025-9648 (GCVE-0-2025-9648)

Vulnerability from cvelistv5 – Published: 2025-09-29 11:47 – Updated: 2025-09-29 12:53
VLAI?
Summary
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.
Severity ?
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-158 - Improper Neutralization of Null Byte or NUL Character
Assigner
References
Impacted products
Vendor Product Version
CivetWeb CivetWeb Unaffected: 0 , < 1.08 (semver)
Unknown: 1.08 , < 1.10 (semver)
Affected: 1.10 , ≤ 1.16 (semver)
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Credits
Artur Łącki
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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.