{"cve_id":"CVE-2026-42897","published":"2026-05-14T18:16:49.360000+00:00","last_modified":"2026-10-26T14:10:00.130000+00:00","vuln_status":"Analyzed","description":"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.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","base_score":6.1,"base_severity":"MEDIUM","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"REQUIRED","scope":"CHANGED","impact_c":"LOW","impact_i":"LOW","impact_a":"NONE","cwe_ids":["CWE-79"],"in_kev":true,"kev_date_added":"2026-05-15","kev_ransomware":false,"epss_score":0.70662,"epss_percentile":0.99393,"cap_rule_version":"0.1.1","stage":"CRED_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":true,"grant_access":"NONE","caps":["CRED_ACCESS","INFO_DISCLOSURE","TAMPER"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-28T03:35:10.984776+00:00","first_seen":"2026-05-14T18:16:49.360000+00:00","kev_first_seen":"2026-05-15T00:00:00+00:00","novelty_score":50.39,"novelty_reasons":["EPSS_SPIKE","HIGH_LEVERAGE_STEPPING_STONE","REACHES_TERMINAL","RAISES_REACH_COMMON_PRODUCT"],"novelty_at":"2026-11-02T03:21:44.260683+00:00","vendors":["microsoft"],"products":["exchange_server","exchange_server_subscription_edition"],"affected":[{"vendor":"microsoft","product":"exchange_server","ranges":["2016","2019"]},{"vendor":"microsoft","product":"exchange_server_subscription_edition","ranges":["< 15.02.2562.043"]}]}