CVE-2026-125389mediumCWE-79

CVE-2026-125389: medium-severity vulnerability in Intermesh Group-Office

Group-Office before 6.8.181, 25.0.116, and 26.0.58 Stored XSS via filterXSS Bypass

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.3%
Intermesh Group-Office before 6.8.181, 25.0.116, and 26.0.58 contains a stored cross-site scripting vulnerability in the email viewer due to a flawed regex in StringHelper::filterXSS. Remote attackers can send emails containing tags like svg/onload, which MessagePanel.js renders raw, executing script in the recipient's session when opened.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Affected products
Intermesh · Group-Office
Related CVEs — Intermesh Group-Office

In the same product, most dangerous first.

CVE-2018-25438HIGHIntermesh Group-Office < 3.5.5 Path Traversal via compress.phpEPSS 0.5%CVE-2026-125390HIGHGroup-Office before 6.8.181, 25.0.116, and 26.0.58 Local File Read via processUploadQueueEPSS 0.4%CVE-2026-125388HIGHGroup-Office before 6.8.181, 25.0.116, and 26.0.58 Missing Authorization in Forms Report DownloadEPSS 0.2%