CVE-2026-15580
Received Received - Intake

Token Disclosure via Unvalidated postMessage in N-able PassPortal

Vulnerability report for CVE-2026-15580, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-21

Last updated on: 2026-08-21

Assigner: N-able

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.

CVSS Scores

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Meta Information

Published
2026-08-21
Last Modified
2026-08-21
Generated
2026-08-21
AI Q&A
2026-08-21
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
n-able passportal to 3.49.6 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-1385 The product uses a WebSocket, but it does not properly verify that the source of data or communication is valid.

Attack-Flow Graph

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Executive Summary

This vulnerability involves a flaw in the N-able PassPortal browser extension before version 3.49.6. It allows token disclosure through an unvalidated postMessage interaction, which could enable authentication abuse by unauthorized parties.

Impact Analysis

An attacker could exploit this to gain access to sensitive authentication tokens, potentially allowing them to impersonate legitimate users or escalate privileges within the PassPortal system.

Compliance Impact

The vulnerability allows authentication abuse through token disclosure, which could lead to unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (healthcare data privacy) by enabling unauthorized data exposure or breaches.

Mitigation Strategies

Update the N-able PassPortal browser extension to version 3.49.6 or later to address the vulnerability.

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