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CVE-2026-59788— Stored XSS vulnerability in OAuth configuration form

Quick assessment

Affected
Zabbix Zabbix
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.

在电子邮件媒体类型的 OAuth 表单中，授权端点值被直接传递给 ，而未对 URL 方案进行验证，从而导致浏览器中执行 协议的 URL。这意味着，通过精心构造的媒体类型配置（可随导入文件交付），攻击者可以以授予同意的超级管理员（Super Admin）身份执行任意 JavaScript 代码。

CVSS 5.6 · Medium

Possible ATT&CK Techniques 2 AI

T1562.008 T1059.007 · JavaScript
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I. Basic Information for CVE-2026-59788

Vulnerability Information
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Vulnerability Title
Stored XSS vulnerability in OAuth configuration form
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zabbix Zabbix 7.4.0 ~ 7.4.11 -

II. Public POCs for CVE-2026-59788

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III. Intelligence Information for CVE-2026-59788

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Other References for CVE-2026-59788 (1)

Same Patch Batch · Zabbix · 2026-10-05 · 6 CVEs total

CVE-2026-59782 6.9 MEDIUM JavaScript preprocessing memory disclosure
CVE-2026-59786 6.9 MEDIUM Active agent heartbeat missing TLS check
CVE-2026-59787 5.3 MEDIUM SNMP trap injection in zabbix_trap_receiver.pl
CVE-2026-59785 5.1 MEDIUM Hidden host credentials inferable via multiselect.get filtering
CVE-2026-59783 2.3 LOW Server DoS via binary items

IV. Related Vulnerabilities

Same product: Zabbix
Same vendor: Zabbix
Same weakness: CWE-79

V. Comments for CVE-2026-59788

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