CVE-2026-125388: high-severity vulnerability in Intermesh Group-Office
Group-Office before 6.8.181, 25.0.116, and 26.0.58 Missing Authorization in Forms Report Download
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.2%
Intermesh Group-Office before 6.8.181, 25.0.116, and 26.0.58 contains a missing authorization vulnerability that allows authenticated users to download form reports via api/download.php without permission checks. Attackers can request the business/forms/report blob with a form ID to export every submission as an XLSX file, disclosing submissions they are not permitted to see.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
Intermesh · Group-OfficeRelated 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-2026-125389MEDIUMGroup-Office before 6.8.181, 25.0.116, and 26.0.58 Stored XSS via filterXSS BypassEPSS 0.3%
References
https://github.com/Intermesh/groupoffice/blob/v26.0.57/www/api/download.php#L89-L129https://github.com/Intermesh/groupoffice/security/advisories/GHSA-42qf-m3j9-837rhttps://www.vulncheck.com/advisories/group-office-before-6.8.181-25.0.116-and-26.0.58-missing-authorization-in-forms-report-download