{"id":"CVE-2026-42897","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-42897","summary":"Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.","details":"Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.","published":"2026-05-14T18:16:49.360","modified":"2026-06-17T10:48:34.893","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},"epss":{"score":0.71205,"percentile":0.9936,"asOf":"2026-08-27"},"cisaKev":{"dateAdded":"2026-05-15","dueDate":"2026-05-29","knownRansomwareCampaignUse":false},"exploitsKnown":1,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42897"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42897"}],"provenance":{"sources":["OSV.dev","NVD","CISA KEV","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T10:48:34.893"}}