{"schema_version":"1","data":[{"id":2236,"advisory_id":"30a2a002-9586-4da2-bc27-4eadc8080ade","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-56728","source_published_at":"2026-09-25T17:10:16.262+00:00","published_at":"2026-10-24T21:15:31.378243+00:00","extraction_method":"structured","technologies":["core-cve","zammad"],"cve_ids":["CVE-2026-56728"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Zammad: Cross-User Taskbar Item Access Control Vulnerability","summary":"Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a broken access control vulnerability exists in Zammad's GraphQL API. An authenticated user can access taskbar item data belonging to another user by crafting a request with the target user's taskbar identifier. The taskbar feature stores transient state for active user sessions, including auto-saved ticket drafts. Under certain conditions, the authorization check for taskbar item access is not enforced, allowing a user to read another user's taskbar item data. This vulnerability is fixed in 7.0.2.","evidence":"cve:CVE-2026-56728","products":[{"name":{"value":"zammad","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-56728","aliases":["CVE-2026-56728"],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","userInteraction":"NONE","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","subIntegrityImpact":"NONE","vulnIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","vulnConfidentialityImpact":"LOW"}}],"affected":[{"vendor":"zammad","product":"zammad","versions":[{"status":"affected","version":"< 7.0.2"}]}],"modified":"2026-09-25T18:38:22.817Z","provider":"cve","references":["https://github.com/zammad/zammad/security/advisories/GHSA-jvcg-5539-vvc3","https://github.com/zammad/zammad/commit/4ccd5d573023b66b0d0184914c92417e1780793f","https://github.com/zammad/zammad/releases/tag/7.0.2"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-56728","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-25T18:38:13.258499Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-25T18:38:22.817Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-25T17:10:16.262Z"}}},"related_cves":[{"value":"CVE-2026-56728","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":2236,"next_before":2236}