CVE-2026-56729: Information Disclosure

Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, when multiple KB categories have different editor roles assigned, a user with knowledge_base.editor in one category can see answer titles and updated_at timestamps from categories they do not have editor access to , via the global quick search. Category names are not leaked, and opening the answer returns "Page not found," but the title alone may disclose sensitive information. This vulnerability is fixed in 7.0.2.

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Weakness Type (CWE)

CWE-200 CWE-200

CWE-280 CWE-280

CWE-284 CWE-284

References

Other References

https://github.com/zammad/zammad/commit/5076aa1e3081146f826ffaef686c89935fdb4393 https://github.com/zammad/zammad/commit/7b6c0adec006e036c9e605c4141a091a6e08aadf https://github.com/zammad/zammad/commit/de5dc4195829e0e1a64307d60c9e06e0e781ab37 https://github.com/zammad/zammad/security/advisories/GHSA-4m54-p3mr-22g2

Frequently Asked Questions

What is CVE-2026-56729? +

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, when multiple KB categories have different editor roles assigned, a user with knowledge_base.editor in one category can see answer titles and updated_at timestamps from categories they do not have editor access to , via the global quick search. Category names are not leaked, and opening the answer returns "Page not found," but the title alone may disclose sensitive information. This vulnerability is fixed in 7.0.2.

How do I check if I'm vulnerable to CVE-2026-56729? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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