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vuln-cve/data/2026/56xxx/CVE-2026-56728.json
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{
"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"
}
}
]
}
}