Zammad up to 7.0.1 GraphQL Mutation Knowledge Base Answer Suggestion Transform authorization

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00+

Summaryinfo

A vulnerability identified as problematic has been detected in Zammad up to 7.0.1. This vulnerability affects the function Knowledge Base Answer Suggestion Transform of the component GraphQL Mutation. Performing a manipulation results in authorization. This vulnerability is identified as CVE-2026-56730. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Zammad up to 7.0.1. This affects the function Knowledge Base Answer Suggestion Transform of the component GraphQL Mutation. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality. The summary by CVE is:

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, an authorization bypass vulnerability was found that allows an authenticated agent to read knowledge base answer content they should not be able to access. The vulnerable GraphQL mutation is meant to transform a knowledge base answer suggestion so it can be inserted into the ticket editor, but it only checks if the user has the ticket.agent permission. Checking the authorization to the knowledge base answer itself is missing. This vulnerability is fixed in 7.0.2.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-56730 since 06/22/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 7.0.2 eliminates this vulnerability.

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Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Zammad 7.0.2

Timelineinfo

06/22/2026 CVE reserved
09/25/2026 +95 days Advisory disclosed
09/25/2026 +0 days VulDB entry created
09/25/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-56730 (🔒)
GCVE (CVE): GCVE-0-2026-56730
GCVE (VulDB): GCVE-100-410391

Entryinfo

Created: 09/25/2026 19:33
Changes: 09/25/2026 19:33 (67)
Complete: 🔍
Cache ID: 216::103

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