Information Exposure Affecting libcpp-httplib0_22 package, versions <0.22.0-160000.5.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.44% (37th percentile)

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  • Snyk IDSNYK-SLES1600-LIBCPPHTTPLIB022-16742744
  • published18 May 2026
  • disclosed8 May 2026

Introduced: 8 May 2026

CVE-2026-28434  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libcpp-httplib0_22 to version 0.22.0-160000.5.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcpp-httplib0_22 package and not the libcpp-httplib0_22 package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, when a request handler throws a C++ exception and the application has not registered a custom exception handler via set_exception_handler(), the library catches the exception and writes its message directly into the HTTP response as a header named EXCEPTION_WHAT. This header is sent to whoever made the request, with no authentication check and no special configuration required to trigger it. The behavior is on by default. A developer who does not know to opt in to set_exception_handler() will ship a server that leaks internal exception messages to any client. This vulnerability is fixed in 0.35.0.

CVSS Base Scores

version 3.1