Is this vulnerability remotely exploitable?

Yes, it can be exploited remotely over HTTP(S), but only by users who already have valid credentials and basic access to the address book module via the JMAP `Contact/query` endpoint.

What level of access does an attacker need to exploit this?

The attacker needs a legitimate, low-privileged Group-Office account with standard address book access. No administrative permissions are required to trigger the SQL injection and exfiltrate data.

What is the safest general fix pattern for this issue?

The safest fix is to refactor the affected queries to use prepared statements or a safe ORM/query builder, enforce strict schema-based validation and whitelisting of query parameters, and eliminate any dynamic SQL concatenation based on user input.

Severity:

HIGH RISK

(8.8)

Authenticated SQL Injection (CWE-89) in Group-Office JMAP Contact Query Endpoint

CVE-2026-33755

Published:

Mar 27, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Vulnerability Type

Category:

SQL Injection

CWE:

CWE-89

Impact:

Authenticated Data Exfiltration and Account Takeover

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

SQL Injection

CWE:

CWE-89

Impact:

Authenticated Data Exfiltration and Account Takeover

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Authenticated SQL Injection (CWE-89) in Group-Office JMAP Contact Query Endpoint

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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