CVE-2026-15580 PUBLISHED

PassPortal browser extension: vault token disclosure via unvalidated postMessage

Assigner: N-able
Reserved: 13.07.2026 Published: 21.08.2026 Updated: 21.08.2026

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 Vector: 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
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	Active

CVSS 4.0

Vendor	N-able
Product	PassPortal
Versions	Default: unaffected affected from 0 to 3.49.6 (excl.)