{"cve":"CVE-2025-48700","nvd":{"published":"2025-06-23T15:15:27.930","modified":"2026-06-17T09:30:11.837","status":"Analyzed","description":"An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information. This issue arises from insufficient sanitization of HTML content, specifically involving crafted tag structures and attribute values that include an @import directive and other script injection vectors. The vulnerability is triggered when a user views a crafted e-mail message in the Classic UI, requiring no additional user interaction.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://wiki.zimbra.com/wiki/Security_Center","https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy","https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48700"],"products":["synacor:zimbra_collaboration_suite"],"source":"nvd","synced_at":"2026-10-19T22:03:23.287444849+00:00"},"epss":{"cve":"CVE-2025-48700","score":0.01713,"percentile":0.77385,"date":"2026-10-31"},"kev":{"cve":"CVE-2025-48700","date_added":"2026-04-20","due_date":"2026-04-23","vendor":"Synacor","product":"Zimbra Collaboration Suite (ZCS)","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}