{"id":"CVE-2025-64781","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-64781","generatedAt":"2026-10-28T05:47:06.518Z","title":"With this configuration, the user may be redirected to an arbitrary website when accessing a specially crafted URL.","description":"In GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1, \"External page display restriction\" is set to \"Do not limit\" in the initial configuration. With this configuration, the user may be redirected to an arbitrary website when accessing a specially crafted URL.","published":"2025-12-12T05:16:12.000Z","lastModified":"2026-10-07T20:10:02.000Z","status":"Analyzed","sourceIdentifier":"vultures@jpcert.or.jp","cvss":{"version":"4.0","score":5.1,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-1188"],"affected":["groupsession/groupsession"],"epss":{"score":0.00207,"percentile":0.10757,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://groupsession.jp/info/info-news/security20251208","tags":["Vendor Advisory"],"source":"vultures@jpcert.or.jp"},{"url":"https://jvn.jp/en/jp/JVN19940619/","tags":["Third Party Advisory"],"source":"vultures@jpcert.or.jp"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-64781","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}