{"id":"CVE-2026-26987","aliases":["GHSA-gqx7-99jw-6fpr"],"url":"https://o3.security/vulnerability/CVE-2026-26987","summary":"LibreNMS affected by reflected XSS via email field","details":"### Summary\nreflected xss via email field \n\n### Details\n 1. visit `http://127.0.0.1/settings/alerting/email`\n 2. in the email address input but this payload \n `<img src=1 onerror=alert(document.cookie)>` \n3. notice the alert \n### PoC\n- video attached with the report\nhttps://github.com/user-attachments/assets/c1b443f5-85c6-4545-b04f-def06d82b42e\n\n\n### Impact\ncan lead to ATO","published":"2026-02-20T01:11:13.925Z","modified":"2026-08-12T03:51:29.880598450Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"librenms/librenms","fixedVersion":"26.2.0"}],"fix":{"url":"https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b","label":"librenms/librenms@8e626b3"},"references":[{"type":"WEB","url":"https://github.com/librenms/librenms/releases/tag/26.2.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26987.json"},{"type":"ADVISORY","url":"https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26987"},{"type":"FIX","url":"https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b"},{"type":"FIX","url":"https://github.com/librenms/librenms/pull/19038"},{"type":"PACKAGE","url":"https://github.com/librenms/librenms"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:29.880598450Z"}}