Information disclosure in Cpp-httplib - CVE-2026-28434

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Main Vulnerability Database Vulnerabilities #VU123626

Information disclosure in Cpp-httplib - CVE-2026-28434

Published: March 9, 2026


Vulnerability identifier: #VU123626
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28434
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the library outputs error handling messages in HTTP responses. A remote attacker can send a specially crafted HTTP request and gain access to sensitive information.


Affected software

Cpp-httplib
Fedora
openEuler
cpp-httplib-debuginfo
cpp-httplib-devel
cpp-httplib-debugsource
cpp-httplib

How to mitigate CVE-2026-28434

Install updates from vendor's website.

Cpp-httplib - update to 0.35.0
cpp-httplib-debuginfo - update to 0.37.0-1
cpp-httplib-devel - update to 0.37.0-1
cpp-httplib-debugsource - update to 0.37.0-1
cpp-httplib - update to 0.37.0-1
cpp-httplib - addressed in versions 0.37.0-1.el9, 0.37.0-1.el10_3, 0.37.0-1.fc42, 0.37.0-1.fc43, 0.37.0-1.fc44

External References

Related Security Bulletins