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.

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

EPSS: 0.004 (31.8th percentile) — read the EPSS interpretation.

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.

Affected products

Intermesh Group-office
Intermesh Groupoffice — versions < 6.8.158, < 25.0.92, < 26.0.17

Weakness classification (CWE)

CWE-89 — SQL Injection

References

security-advisories@github.com (x_refsource_CONFIRM, 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.