What’s Vulnerable › Vulnerabilities

CVE-2020-11709

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-04-12 · updated 2026-06-17
• Weakness: CWE-74

Description

cpp-httplib through 0.5.8 does not filter \r\n in parameters passed into the set_redirect and set_header functions, which creates possibilities for CRLF injection and HTTP response splitting in some specific contexts.

Affected products

• yhirose cpp-httplib: through 0.5.8

References

• https://gist.github.com/shouc/a9330df817128bc4c4132abf3de09495
• https://github.com/yhirose/cpp-httplib/issues/425
• https://gist.github.com/shouc/a9330df817128bc4c4132abf3de09495
• https://github.com/yhirose/cpp-httplib/issues/425

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