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CVE-2026-77506

Quick assessment

Affected
Znuny Znuny
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 LTS 6.5.22 版本之前，Znuny 存在代理邮件重发模板中的跨站脚本（XSS）漏洞。

CVSS 4.8 · Medium EPSS 0.25% · P17

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
Znuny Znuny 6.0< 6.5.22 affected
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I. Basic Information for CVE-2026-77506

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Znuny before LTS 6.5.22 allows AgentTicketEmailResend template XSS.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A: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
Znuny Znuny 6.0 ~ 6.5.22 -

II. Public POCs for CVE-2026-77506

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III. Intelligence Information for CVE-2026-77506

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Vendor Advisories for CVE-2026-77506 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-77506

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