Uncontrolled Recursion 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
0.61% (48th percentile)

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  • Snyk IDSNYK-SLES1600-LIBCPPHTTPLIB022-16742581
  • published18 May 2026
  • disclosed8 May 2026

Introduced: 8 May 2026

CVE-2026-29076  (opens in a new tab)
CWE-674  (opens in a new tab)
CWE-1333  (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 version 0.37.0, cpp-httplib uses std::regex (libstdc++) to parse RFC 5987 encoded filename* values in multipart Content-Disposition headers. The regex engine in libstdc++ implements backtracking via deep recursion, consuming one stack frame per input character. An attacker can send a single HTTP POST request with a crafted filename* parameter that causes uncontrolled stack growth, resulting in a stack overflow (SIGSEGV) that crashes the server process. This issue has been patched in version 0.37.0.

CVSS Base Scores

version 3.1