PT-2025-29151 · Unknown+1 · Cpp-Httplib+1

Otavioolsilva · Published 2025-07-10 · Updated 2026-03-02 · CVE-2025-53629

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.23.0

Description cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Incoming requests using Transfer-Encoding: chunked in the header can allocate memory arbitrarily in the server, potentially leading to its exhaustion.

Recommendations Update cpp-httplib to version 0.23.0 or later.

Exploit

Fix

Resource Exhaustion

Allocation of Resources Without Limits

Weakness Enumeration

CWE-400

CWE-770

Related Identifiers

BDU:2026-00100

CVE-2025-53629

ECHO-39EE-6C8B-C400

GHSA-J6P8-779X-P5PW

GHSA-QJMQ-H3CC-QV6W

OESA-2025-1839

OESA-2025-1840

OESA-2025-1841

OESA-2025-1842

OESA-2025-1843

OPENSUSE-SU-2026:20295-1

SUSE-SU-2026:20600-1

Affected Products

Debian

Cpp-Httplib

References · 33

• 🔥 https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53629.json · Exploit
• https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99 · Patch
• https://osv.dev/vulnerability/OESA-2025-1841 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-1840 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-53629 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-53629 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20295-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-53629 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53629 · Security Note
• https://osv.dev/vulnerability/OESA-2025-1842 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-53629 · Security Note
• https://bdu.fstec.ru/vul/2026-00100 · Security Note
• https://ubuntu.com/security/CVE-2025-53629 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-1839 · Vendor Advisory