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CVE-2026-15580— PassPortal browser extension: vault token disclosure via unvalidated postMessage

Quick assessment

Affected
N-able PassPortal
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.

N-able passportal是加拿大N-able公司的一个密码管理平台。 N-able passportal 3.49.6之前版本存在输入验证错误漏洞，该漏洞源于未验证的postMessage，可能导致vault令牌泄露和身份验证滥用。

CVSS 6.9 · Medium EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
N-able PassPortal < 3.49.6 affected
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I. Basic Information for CVE-2026-15580

Vulnerability Information
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Vulnerability Title
PassPortal browser extension: vault token disclosure via unvalidated postMessage
Source: CVE Program / CVE List V5
Vulnerability Description
vault token disclosure via unvalidated postMessage vulnerability in N-able PassPortal allows Authentication Abuse. This issue affects the PassPortal browser extension: before 3.49.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1385
Source: CVE Program / CVE List V5
Vulnerability Title
N-able passportal 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
N-able passportal是加拿大N-able公司的一个密码管理平台。 N-able passportal 3.49.6之前版本存在输入验证错误漏洞，该漏洞源于未验证的postMessage，可能导致vault令牌泄露和身份验证滥用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
N-able PassPortal 0 ~ 3.49.6 -

II. Public POCs for CVE-2026-15580

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III. Intelligence Information for CVE-2026-15580

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Vendor Advisories for CVE-2026-15580 (1)

IV. Related Vulnerabilities

Same vendor: N-able
Same weakness: CWE-1385

V. Comments for CVE-2026-15580

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