{"apiVersion":"1.0","identifier":"CVE-2026-77341","description":"cpp-httplib is a C++ header-only HTTP/HTTPS library. In version 0.49.0, the chunked-response trailer output path writes trailer header names and values directly to the socket without validating them, allowing CRLF sequences in a trailer field to inject additional headers or split the HTTP response. Unlike every other header-writing path in the library, the trailer-writing code applies none of the field-name and field-value checks that reject carriage return and line feed, so an application that places attacker-influenced data into a chunked response trailer emits attacker-controlled CRLF onto the wire. This enables HTTP response splitting, letting an attacker forge response headers or inject a second response. This issue is fixed in version 0.50.0.","publishedAt":"2026-08-28T00:18:15","lastModifiedAt":"2026-08-28T00:18:15","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77341","cvssScore":5.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","epssProbability":0.00272,"riskScore":0.54,"affectedProduct":"cpp-httplib","affectedVersions":"<0.50.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-77341","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-77341","en":"https://www.redsauce.net/en/cves/CVE-2026-77341","fr":"https://www.redsauce.net/fr/cves/CVE-2026-77341","pt":"https://www.redsauce.net/pt/cves/CVE-2026-77341","de":"https://www.redsauce.net/de/cves/CVE-2026-77341","sk":"https://www.redsauce.net/sk/cves/CVE-2026-77341","el":"https://www.redsauce.net/el/cves/CVE-2026-77341"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-77341"}}