CVE-2026-63006— Zammad: HTML sanitizer API path allowlist bypass via interior path traversal in img src/srcset
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 helpdesk/客户支持系统。在 7.1.2 版本之前，攻击者可以在传入的电子邮件或工单中插入受控的 HTML 内容，通过路径遍历序列绕过图片 URL 的净化机制。当已认证的客服人员查看该内容时，浏览器会将 URL 解析为受保护的 API 端点，并附带客服人员的会话 Cookie 发送请求，从而导致无需用户交互即可实现副作用（例如强制登出）。该问题已在 7.1.2 版本中修复。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-63006
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Zammad: HTML sanitizer API path allowlist bypass via interior path traversal in img src/srcset
Source: CVE Program / CVE List V5
Vulnerability Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, attacker-controlled HTML in inbound emails or tickets could bypass the image URL sanitizer using path traversal sequences. When an authenticated agent views the content, the browser resolves the URL to a protected API endpoint and sends the request with the agent's session cookie, enabling side effects such as forced logout without any user interaction. 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:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-63006
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-63006
请登录查看更多情报信息。
Other References for CVE-2026-63006 (2)
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-2026-56723 | 7.1 HIGH | Zammad: Missing authorization on ticket attachment download |
| CVE-2026-56727 | 7.1 HIGH | Zammad: PGP signature spoofing via unvalidated verification return |
| 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-2026-84461 | 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-2026-84460 | 5.3 MEDIUM | Zammad: Missing Authorization in TagsController#list Allows Cross-Object Tag Enumeration |
| CVE-2026-56728 | 5.3 MEDIUM | Zammad: Cross-User Taskbar Item Access Control Vulnerability |
| CVE-2026-56735 | 5.3 MEDIUM | Zammad: Improper neutralization of `srcset` attribute in IMG tags in Zammad |
| 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-2026-63206 | 5.3 MEDIUM | Zammad: Remote image tracking bypass via shortened URL scheme |
Showing top 20 of 30 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: zammad
-
CVE-2026-63208
Zammad: Microsoft Graph error logs expose partially masked O -
CVE-2026-63204
Zammad: Authenticated agents can read AI summary error messa -
CVE-2026-61855
Zammad: Invalid PGP Detached Signatures Reported as Good Sig -
CVE-2026-84461
Zammad: Missing rate limiting allows password brute-forcing -
CVE-2026-63207
Zammad: Sensitive Information Exposure in Integration Admini
Same vendor: zammad
-
CVE-2026-63208
Zammad: Microsoft Graph error logs expose partially masked O -
CVE-2026-63204
Zammad: Authenticated agents can read AI summary error messa -
CVE-2026-61855
Zammad: Invalid PGP Detached Signatures Reported as Good Sig -
CVE-2026-84461
Zammad: Missing rate limiting allows password brute-forcing -
CVE-2026-63207
Zammad: Sensitive Information Exposure in Integration Admini
Same weakness: CWE-22
-
CVE-2026-90925
Path Traversal in Innotim Software's Logsign SIEM -
CVE-2026-85185
Path traversal in LXD btrfs storage driver allows arbitrary -
CVE-2026-85526
Path traversal via Btrfs optimized-backup subvolumes[].path -
CVE-2026-86334
CLI Path Traversal via Content-Disposition in LXD Image Expo -
CVE-2026-15953
Path Traversal During Project Archive Import
V. Comments for CVE-2026-63006
No comments yet