{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-45558: Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-45558","status":"final","version":"1","initial_release_date":"2026-06-10T14:01:42.317Z","current_release_date":"2026-06-10T15:43:53.271Z","revision_history":[{"date":"2026-06-10T14:01:42.317Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, the HAProxy section-save endpoints (POST /api/service/haproxy/<server_id>/section/<section_type> and the PUT / global / defaults variants) accept a JSON option field that is not validated, not escaped, and is rendered verbatim into the generated HAProxy configuration via the section.j2, global.j2, and defaults.j2 Ansible templates. Because Roxy-WI then pushes the generated config to the load balancer and runs systemctl reload haproxy, an authenticated user with role ≤ 3 (user) can inject arbitrary HAProxy directives into the config that runs on every load balancer their group manages — including option external-check + external-check command /bin/bash -c '…', which gives remote code execution on the load balancer as the haproxy user on every health-check tick. At time of publication, there are no publicly available patches.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-45558 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-45558"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-45558"},{"category":"external","summary":"https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-w2x4-66jj-3597","url":"https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-w2x4-66jj-3597"}]},"product_tree":{"branches":[{"category":"vendor","name":"roxy-wi","branches":[{"category":"product_name","name":"roxy-wi","branches":[{"category":"product_version","name":"<= 8.2.6.4","product":{"name":"roxy-wi roxy-wi <= 8.2.6.4","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:roxy-wi:roxy-wi:\\<\\=_8.2.6.4:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-45558","title":"Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save","notes":[{"category":"description","text":"Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, the HAProxy section-save endpoints (POST /api/service/haproxy/<server_id>/section/<section_type> and the PUT / global / defaults variants) accept a JSON option field that is not validated, not escaped, and is rendered verbatim into the generated HAProxy configuration via the section.j2, global.j2, and defaults.j2 Ansible templates. Because Roxy-WI then pushes the generated config to the load balancer and runs systemctl reload haproxy, an authenticated user with role ≤ 3 (user) can inject arbitrary HAProxy directives into the config that runs on every load balancer their group manages — including option external-check + external-check command /bin/bash -c '…', which gives remote code execution on the load balancer as the haproxy user on every health-check tick. At time of publication, there are no publicly available patches.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":9.9,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}