{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"critical"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2025-66570","title":"Title"},{"category":"description","text":"cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can inject headers named REMOTE_ADDR, REMOTE_PORT, LOCAL_ADDR, LOCAL_PORT that are parsed into the request header multimap via read_headers() in httplib.h (headers.emplace), then the server later appends its own internal metadata using the same header names in Server::process_request without erasing duplicates. Because Request::get_header_value returns the first entry for a header key (id == 0) and the client-supplied headers are parsed before server-inserted headers, downstream code that uses these header names may inadvertently use attacker-controlled values. Affected files/locations: cpp-httplib/httplib.h (read_headers, Server::process_request, Request::get_header_value, get_header_value_u64) and cpp-httplib/docker/main.cc (get_client_ip, nginx_access_logger, nginx_error_logger). Attack surface: attacker-controlled HTTP headers in incoming requests flow into the Request.headers multimap and into logging code that reads forwarded headers, enabling IP spoofing, log poisoning, and authorization bypass via header shadowing. This vulnerability is fixed in 0.27.0.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2025-66570","url":"https://www.suse.com/security/cve/CVE-2025-66570"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1254734 for CVE-2025-66570","url":"https://bugzilla.suse.com/1254734"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:20090-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-January/023810.html"}],"title":"SUSE CVE CVE-2025-66570","tracking":{"current_release_date":"2026-03-13T14:05:40Z","generator":{"date":"2025-12-11T00:23:28Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2025-66570","initial_release_date":"2025-12-11T00:23:28Z","revision_history":[{"date":"2025-12-11T00:23:28Z","number":"2","summary":"references added,severity changed from  to critical"},{"date":"2025-12-26T00:23:54Z","number":"3","summary":"vulnerabilities added"},{"date":"2026-01-17T00:28:00Z","number":"4","summary":"updates entered QA"},{"date":"2026-01-19T00:24:03Z","number":"5","summary":"more updates released"},{"date":"2026-01-21T00:21:06Z","number":"6","summary":"more updates released,references added"},{"date":"2026-03-02T00:25:21Z","number":"7","summary":"unknown changes"},{"date":"2026-03-11T16:52:36Z","number":"8","summary":"unknown changes"},{"date":"2026-03-13T14:05:40Z","number":"9","summary":"unknown changes"}],"status":"interim","version":"9"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE Linux Enterprise Server 16.0","product":{"name":"SUSE Linux Enterprise Server 16.0","product_id":"SUSE Linux Enterprise Server 16.0","product_identification_helper":{"cpe":"cpe:/o:suse:sles:16:16.0:server"}}},{"category":"product_name","name":"SUSE Linux Enterprise Server for SAP applications 16.0","product":{"name":"SUSE Linux Enterprise Server for SAP applications 16.0","product_id":"SUSE Linux Enterprise Server for SAP applications 16.0","product_identification_helper":{"cpe":"cpe:/o:suse:sles:16:16.0:server-sap"}}},{"category":"product_name","name":"openSUSE Leap 16.0","product":{"name":"openSUSE Leap 16.0","product_id":"openSUSE Leap 16.0"}},{"category":"product_name","name":"openSUSE Tumbleweed","product":{"name":"openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed","product_identification_helper":{"cpe":"cpe:/o:opensuse:tumbleweed"}}},{"category":"product_version","name":"cpp-httplib-devel-0.22.0-160000.3.1","product":{"name":"cpp-httplib-devel-0.22.0-160000.3.1","product_id":"cpp-httplib-devel-0.22.0-160000.3.1","product_identification_helper":{"purl":"pkg:rpm/suse/cpp-httplib-devel@0.22.0-160000.3.1"}}},{"category":"product_version","name":"cpp-httplib-devel-0.28.0-1.1","product":{"name":"cpp-httplib-devel-0.28.0-1.1","product_id":"cpp-httplib-devel-0.28.0-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/cpp-httplib-devel@0.28.0-1.1"}}},{"category":"product_version","name":"libcpp-httplib0_22-0.22.0-160000.3.1","product":{"name":"libcpp-httplib0_22-0.22.0-160000.3.1","product_id":"libcpp-httplib0_22-0.22.0-160000.3.1","product_identification_helper":{"purl":"pkg:rpm/suse/libcpp-httplib0_22@0.22.0-160000.3.1?upstream=cpp-httplib-0.22.0-160000.3.1.src.rpm"}}},{"category":"product_version","name":"libcpp-httplib0_28-0.28.0-1.1","product":{"name":"libcpp-httplib0_28-0.28.0-1.1","product_id":"libcpp-httplib0_28-0.28.0-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/libcpp-httplib0_28@0.28.0-1.1?upstream=cpp-httplib-0.28.0-1.1.src.rpm"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"libcpp-httplib0_22-0.22.0-160000.3.1 as component of SUSE Linux Enterprise Server 16.0","product_id":"SUSE Linux Enterprise Server 16.0:libcpp-httplib0_22-0.22.0-160000.3.1"},"product_reference":"libcpp-httplib0_22-0.22.0-160000.3.1","relates_to_product_reference":"SUSE Linux Enterprise Server 16.0"},{"category":"default_component_of","full_product_name":{"name":"libcpp-httplib0_22-0.22.0-160000.3.1 as component of SUSE Linux Enterprise Server for SAP applications 16.0","product_id":"SUSE Linux Enterprise Server for SAP applications 16.0:libcpp-httplib0_22-0.22.0-160000.3.1"},"product_reference":"libcpp-httplib0_22-0.22.0-160000.3.1","relates_to_product_reference":"SUSE Linux Enterprise Server for SAP applications 16.0"},{"category":"default_component_of","full_product_name":{"name":"cpp-httplib-devel-0.22.0-160000.3.1 as component of openSUSE Leap 16.0","product_id":"openSUSE Leap 16.0:cpp-httplib-devel-0.22.0-160000.3.1"},"product_reference":"cpp-httplib-devel-0.22.0-160000.3.1","relates_to_product_reference":"openSUSE Leap 16.0"},{"category":"default_component_of","full_product_name":{"name":"libcpp-httplib0_22-0.22.0-160000.3.1 as component of openSUSE Leap 16.0","product_id":"openSUSE Leap 16.0:libcpp-httplib0_22-0.22.0-160000.3.1"},"product_reference":"libcpp-httplib0_22-0.22.0-160000.3.1","relates_to_product_reference":"openSUSE Leap 16.0"},{"category":"default_component_of","full_product_name":{"name":"cpp-httplib-devel-0.28.0-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:cpp-httplib-devel-0.28.0-1.1"},"product_reference":"cpp-httplib-devel-0.28.0-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"libcpp-httplib0_28-0.28.0-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:libcpp-httplib0_28-0.28.0-1.1"},"product_reference":"libcpp-httplib0_28-0.28.0-1.1","relates_to_product_reference":"openSUSE Tumbleweed"}]},"vulnerabilities":[{"cve":"CVE-2025-66570","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2025-66570"}],"notes":[{"category":"general","text":"cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can inject headers named REMOTE_ADDR, REMOTE_PORT, LOCAL_ADDR, LOCAL_PORT that are parsed into the request header multimap via read_headers() in httplib.h (headers.emplace), then the server later appends its own internal metadata using the same header names in Server::process_request without erasing duplicates. Because Request::get_header_value returns the first entry for a header key (id == 0) and the client-supplied headers are parsed before server-inserted headers, downstream code that uses these header names may inadvertently use attacker-controlled values. Affected files/locations: cpp-httplib/httplib.h (read_headers, Server::process_request, Request::get_header_value, get_header_value_u64) and cpp-httplib/docker/main.cc (get_client_ip, nginx_access_logger, nginx_error_logger). Attack surface: attacker-controlled HTTP headers in incoming requests flow into the Request.headers multimap and into logging code that reads forwarded headers, enabling IP spoofing, log poisoning, and authorization bypass via header shadowing. This vulnerability is fixed in 0.27.0.","title":"CVE description"}],"product_status":{"first_fixed":["SUSE Linux Enterprise Server 16.0:libcpp-httplib0_22-0.22.0-160000.3.1"],"recommended":["SUSE Linux Enterprise Server 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","SUSE Linux Enterprise Server for SAP applications 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","openSUSE Leap 16.0:cpp-httplib-devel-0.22.0-160000.3.1","openSUSE Leap 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","openSUSE Tumbleweed:cpp-httplib-devel-0.28.0-1.1","openSUSE Tumbleweed:libcpp-httplib0_28-0.28.0-1.1"]},"references":[{"category":"external","summary":"CVE-2025-66570","url":"https://www.suse.com/security/cve/CVE-2025-66570"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1254734 for CVE-2025-66570","url":"https://bugzilla.suse.com/1254734"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:20090-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-January/023810.html"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Server 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","SUSE Linux Enterprise Server for SAP applications 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","openSUSE Leap 16.0:cpp-httplib-devel-0.22.0-160000.3.1","openSUSE Leap 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","openSUSE Tumbleweed:cpp-httplib-devel-0.28.0-1.1","openSUSE Tumbleweed:libcpp-httplib0_28-0.28.0-1.1"]}],"scores":[{"cvss_v3":{"baseScore":10,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"products":["SUSE Linux Enterprise Server 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","SUSE Linux Enterprise Server for SAP applications 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","openSUSE Leap 16.0:cpp-httplib-devel-0.22.0-160000.3.1","openSUSE Leap 16.0:libcpp-httplib0_22-0.22.0-160000.3.1","openSUSE Tumbleweed:cpp-httplib-devel-0.28.0-1.1","openSUSE Tumbleweed:libcpp-httplib0_28-0.28.0-1.1"]}],"threats":[{"category":"impact","date":"2025-12-05T21:00:07Z","details":"critical"}],"title":"CVE-2025-66570"}]}