CVE-2026-15580 PassPortal browser extension: vault token disclosure via unvalidated postMessage
An attacker can steal vault tokens via unvalidated postMessage in the PassPortal browser extension, leading to authentication abuse.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-15580?
CVE-2026-15580 is a medium-severity vulnerability in N-able PassPortal, published on 21 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-1385
Which versions are affected by CVE-2026-15580?
How do I fix CVE-2026-15580?
No fix has been published for CVE-2026-15580 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15580 being exploited?
There is no known exploitation of CVE-2026-15580 in the wild and no public exploit code.
Sources
Also known as GHSA-6637-gh22-j6hq.