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 浏览器扩展中存在未验证的 postMessage 漏洞，可导致 Vault Token 泄露，进而引发身份验证滥用问题。 该问题影响 PassPortal 浏览器扩展版本早于 3.49.6 的版本。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| N-able | PassPortal | 0 ~ 3.49.6 | - |
|
II. Public POCs for CVE-2026-15580
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-15580 (1)
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V. Comments for CVE-2026-15580
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