Uncaught Exception Affecting cpp-httplib package, versions [,0.39.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-CPPHTTPLIB-15474308
- published12 Mar 2026
- disclosed11 Mar 2026
- creditUnknown
Introduced: 11 Mar 2026
CVE-2026-31870 (opens in a new tab)How to fix?
Upgrade cpp-httplib to version 0.39.0 or higher.
Overview
Affected versions of this package are vulnerable to Uncaught Exception in the ClientImpl::open_stream() function when processing the Content-Length response header in the streaming API. An attacker can cause the client process to crash by sending a malformed or excessively large Content-Length value in an HTTP response.