{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56728","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-22T19:17:28.958Z","datePublished":"2026-09-25T17:10:16.262Z","dateUpdated":"2026-09-25T18:38:22.817Z"},"containers":{"cna":{"title":"Zammad: Cross-User Taskbar Item Access Control Vulnerability","problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"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","version":"4.0"}}],"references":[{"name":"https://github.com/zammad/zammad/security/advisories/GHSA-jvcg-5539-vvc3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zammad/zammad/security/advisories/GHSA-jvcg-5539-vvc3"},{"name":"https://github.com/zammad/zammad/commit/4ccd5d573023b66b0d0184914c92417e1780793f","tags":["x_refsource_MISC"],"url":"https://github.com/zammad/zammad/commit/4ccd5d573023b66b0d0184914c92417e1780793f"},{"name":"https://github.com/zammad/zammad/releases/tag/7.0.2","tags":["x_refsource_MISC"],"url":"https://github.com/zammad/zammad/releases/tag/7.0.2"}],"affected":[{"vendor":"zammad","product":"zammad","versions":[{"version":"< 7.0.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-25T17:10:16.262Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-jvcg-5539-vvc3","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-25T18:38:13.258499Z","id":"CVE-2026-56728","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-25T18:38:22.817Z"}}]}}