SQL Injection in Intermesh Group-Office
CVE-2026-33755
Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.158, 25.0.92, and 26.0.17, an authenticated SQL Injection vulnerability in the JMAP `Contact/query` endpoint allows any authenticated user with basic addressbook access to extract arbitrary data from the database — including active session tokens of other users. This enables full account takeover of any user, including the System Administrator, without knowing their password. Versions 6.8.158, 25.0.92, and 26.0.17 fix the issue.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Intermesh Group-Office
- Intermesh Groupoffice — versions < 6.8.158, < 25.0.92, < 26.0.17
Weakness classification (CWE)
References
- github.com/Intermesh/groupoffice/security/advisories/GHSA-3gc4-5993-c2qc (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33755?
- CVE-2026-33755 is a high-severity vulnerability in Intermesh Group-Office, classified under SQL Injection. CVSS score: 8.8/10. Published 2026-03-27.
- How severe is CVE-2026-33755?
- High severity. CVSS v3 base score is 8.8 out of 10.