Resource exhaustion in Cpp-httplib - CVE-2025-53629

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Main Vulnerability Database Vulnerabilities #VU114682

Resource exhaustion in Cpp-httplib - CVE-2025-53629

Published: September 2, 2025


Vulnerability identifier: #VU114682
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2025-53629
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion by sending specially crafted HTTP requests with Transfer-Encoding: chunked header and perform a denial of service (DoS) attack.


Affected software

Cpp-httplib
Debian Linux
Fedora
openEuler
cpp-httplib (Debian package)
cpp-httplib-debugsource
cpp-httplib-devel
cpp-httplib-debuginfo
cpp-httplib

How to mitigate CVE-2025-53629

Install updates from vendor's website.

Cpp-httplib - update to 0.23.0
cpp-httplib (Debian package) - update to 0.18.7-1+deb13u1
cpp-httplib-debugsource - update to 0.22.0-2
cpp-httplib-devel - update to 0.22.0-2
cpp-httplib-debuginfo - update to 0.22.0-2
cpp-httplib - update to 0.22.0-2
cpp-httplib - update to 0.26.0-1.el10_2

External References

Related Security Bulletins