Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak (CVE-2026-56726) | HOL Guard CVE

Medium · CVSS 5.1CVE-2026-56726

Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak

Answer in brief

CVE-2026-56726 records a Medium severity (CVSS 5.1) vulnerability in Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak. The current sources do not mark it as known exploited. The current feed maps zammad/zammad (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps zammad/zammad (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
zammad/zammadgeneric	<7.0.2	7.0.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for zammad/zammad.
Review the reported fix. Update zammad/zammad to 7.0.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, this vulnerability breaks normal ticket isolation boundaries between agents. Any authenticated agent, even one with no active tickets assigned to them, can view the titles, status, labels, and URL links of GitHub/GitLab issues attached to any ticket in the system. This allows an internal user to systematically view GitHub/GitLab issue data linked by other agents or administrators across the organization by simply querying random or sequential ticket IDs. This vulnerability is fixed in 7.0.2.

Quoted source text, attributed separately from HOL analysis.