CRLF Injection Affecting cpp-httplib package, versions [,0.44.0)
Threat Intelligence
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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-17099494
- published30 May 2026
- disclosed29 May 2026
- creditjjjsmz
Introduced: 29 May 2026
NewCVE-2026-45372 (opens in a new tab)How to fix?
Upgrade cpp-httplib to version 0.44.0 or higher.
Overview
Affected versions of this package are vulnerable to CRLF Injection via the parse_header process. An attacker can inject arbitrary carriage return and line feed characters into HTTP headers by sending specially crafted percent-encoded values, potentially leading to response splitting or header injection.