Vulnerability · Published Mar 27, 2026 · Assigned by GitHub_M

CVE-2026-33755Authenticated SQL Injection in Contact/query addressBookIds filter

High 8.8

In plain English

A high-severity SQL injection in groupoffice from Intermesh. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 66.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Intermesh	groupoffice	< 6.8.158< 25.0.92< 26.0.17

Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-3gc4-5993-c2qc x_refsource_CONFIRM