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CVE-2026-59788

Stored XSS vulnerability in OAuth configuration form

MEDIUM
5.6
CVSS Score
Published: October 5, 2026 at 10:29 AM UTC
Updated: October 6, 2026 at 03:27 PM UTC
1 product affected across 1 vendorZabbix

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Severity
MEDIUM5.6
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

The email media type OAuth form passes the Authorization endpoint value to window.open() without validating the URL scheme, so a javascript: URL is executed in the browser. This means a crafted media type configuration, deliverable as an import file, runs arbitrary JavaScript as the Super Admin who grants consent.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Zabbix· Zabbix
60%
7.4.0 ≤ v ≤ 7.4.117.4.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://support.zabbix.com/browse/ZBX-28198

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.6MEDIUMZabbix
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-79

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