CVE-2026-84460— Zammad: Missing Authorization in TagsController#list Allows Cross-Object Tag Enumeration
Quick assessment
Affected
zammad zammad
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Zammad 是一个基于 Web 的开源帮助台/客户支持系统。在 7.1.2 版本之前，任何经过身份验证的用户都可以调用用于获取标签列表的 REST 端点，并获取指定工单的标签名称，即使用户对该工单没有访问权限也是如此。标签是内部分类功能，可能包含敏感信息。由于工单 ID 是顺序递增的整数，因此可以轻易进行批量枚举。该问题已在 7.1.2 版本中得到修复。
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I. Basic Information for CVE-2026-84460
Vulnerability Information
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Vulnerability Title
Zammad: Missing Authorization in TagsController#list Allows Cross-Object Tag Enumeration
Source: CVE Program / CVE List V5
Vulnerability Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, any authenticated user can call the REST endpoint for getting a tag list and receive the tag names for the given ticket, regardless of whether they have access to that ticket. Tags are an internal categorization feature and may contain sensitive labels. Ticket IDs are sequential integers, making bulk enumeration straightforward. This issue is fixed in version 7.1.2.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-84460
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-84460 (3)
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https://github.com/zammad/zammad/security/advisories/GHSA-6vgm-xxp4-p6jv x_refsource_CONFIRM
Same Patch Batch · zammad · 2026-09-25 · 30 CVEs total
| CVE-2026-84458 | 9.1 CRITICAL | Zammad: Account takeover via unverified email matching during SSO auto-link |
| CVE-2026-61525 | 8.8 HIGH | Zammad: Arbitrary File Deletion via Unvalidated Session Identifier in Long Polling Control |
| CVE-2026-56733 | 8.7 HIGH | Zammad: Incorrect Authorization and Improper Privilege Management |
| CVE-2026-56725 | 8.7 HIGH | Zammad: Denial of Service via OTRS Import Controller |
| CVE-2026-84462 | 8.6 HIGH | Zammad: AI Agent template sanitizer bypass leads to remote code execution |
| CVE-2026-56731 | 8.4 HIGH | Zammad: Cross-Site Scripting in Ticket Notifications |
| CVE-2026-56724 | 7.1 HIGH | Zammad: Incorrect implementation of permission checks in the knowledge base module |
| CVE-2026-84465 | 7.1 HIGH | Zammad: S/MIME signature verification allows forged sender impersonation |
| CVE-2026-84464 | 7.1 HIGH | Zammad: IDOR in External Data Source rendering exposes ticket, user, group, and organizati |
| CVE-2026-56727 | 7.1 HIGH | Zammad: PGP signature spoofing via unvalidated verification return |
| CVE-2026-56723 | 7.1 HIGH | Zammad: Missing authorization on ticket attachment download |
| CVE-2026-84461 | 6.9 MEDIUM | Zammad: Missing rate limiting allows password brute-forcing during two-factor login |
| CVE-2026-63207 | 6.9 MEDIUM | Zammad: Sensitive Information Exposure in Integration Administration API |
| CVE-2026-84463 | 6.3 MEDIUM | Zammad: Stored HTML injection in Knowledge Base video widget enables forced session switch |
| CVE-2026-56735 | 5.3 MEDIUM | Zammad: Improper neutralization of `srcset` attribute in IMG tags in Zammad |
| CVE-2026-56728 | 5.3 MEDIUM | Zammad: Cross-User Taskbar Item Access Control Vulnerability |
| CVE-2026-63206 | 5.3 MEDIUM | Zammad: Remote image tracking bypass via shortened URL scheme |
| CVE-2026-56732 | 5.3 MEDIUM | Zammad: Malicious input in Ticket Body Enables Session Termination |
| CVE-2026-56734 | 5.3 MEDIUM | Zammad: Avatar Image URL Server-Side Request Forwarding |
| CVE-2026-61855 | 5.3 MEDIUM | Zammad: Invalid PGP Detached Signatures Reported as Good Signature on Inbound Mail |
Showing top 20 of 30 CVEs. View all on vendor page → →
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Same weakness: CWE-639
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V. Comments for CVE-2026-84460
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