{"schema_version":"1.7.2","id":"OESA-2026-1159","modified":"2026-08-06T11:10:11Z","published":"2026-01-16T11:10:11Z","upstream":["CVE-2026-21428","CVE-2026-22776"],"summary":"cpp-httplib security update","details":"A C++11 single-file header-only cross platform HTTP/HTTPS library. It's extremely easy to setup. Just include httplib.h file in your code!\r\n\r\nSecurity Fix(es):\n\ncpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the ``write_headers`` function does not check for CR & LF characters in user supplied headers, allowing untrusted header value to escape header lines.\nThis vulnerability allows attackers to add extra headers, modify request body unexpectedly & trigger an SSRF attack. When combined with a server that supports http1.1 pipelining (springboot, python twisted etc), this can be used for server side request forgery (SSRF). Version 0.30.0 fixes this issue.(CVE-2026-21428)\n\ncpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.1, a Denial of Service (DoS) vulnerability exists due to the unsafe handling of compressed HTTP request bodies (Content-Encoding: gzip, br, etc.). The library validates the payload_max_length against the compressed data size received from the network, but does not limit the size of the decompressed data stored in memory. An attacker can exploit this by sending a compressed payload with a very high compression ratio (e.g., a zip bomb), which upon decompression consumes excessive memory, leading to service unavailability.(CVE-2026-22776)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"cpp-httplib","purl":"pkg:rpm/openEuler/cpp-httplib&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.30.1-1.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["cpp-httplib-0.30.1-1.oe2403sp1.aarch64.rpm","cpp-httplib-debuginfo-0.30.1-1.oe2403sp1.aarch64.rpm","cpp-httplib-debugsource-0.30.1-1.oe2403sp1.aarch64.rpm","cpp-httplib-devel-0.30.1-1.oe2403sp1.aarch64.rpm"],"src":["cpp-httplib-0.30.1-1.oe2403sp1.src.rpm"],"x86_64":["cpp-httplib-0.30.1-1.oe2403sp1.x86_64.rpm","cpp-httplib-debuginfo-0.30.1-1.oe2403sp1.x86_64.rpm","cpp-httplib-debugsource-0.30.1-1.oe2403sp1.x86_64.rpm","cpp-httplib-devel-0.30.1-1.oe2403sp1.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1159"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21428"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22776"}],"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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"}],"database_specific":{"severity":"High"}}