CVE-2026-45173 Idira Identity Browser Extension: Unauthorized Application Interaction via Origin Validation Failure
Attackers can bypass origin validation to trigger unauthorized application interactions or execute parameters in an authenticated user's browser session.
- 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-2026-45173?
CVE-2026-45173 is a high-severity vulnerability in CyberArk Software, a Palo Alto Networks Company Identity Browser Extensions, published on 11 Jun 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
Idira Identity Browser Extension (Chrome, Firefox, and Edge builds) versions prior to 26.8.1 exhibit an origin validation flaw within its internal web-page verification routines. If an authenticated user navigates to a specially crafted webpage, this interaction could potentially allow a remote attacker to trigger unauthorized application interaction or execution parameters within the context of that authenticated browser session. CyberArk Security Bulletin: CA26-21
Weakness: CWE-346
Which versions are affected by CVE-2026-45173?
It affects 1 product.
Products include Paloaltonetworks Idira Identity Browser Extension.
How do I fix CVE-2026-45173?
No fix has been published for CVE-2026-45173 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-45173 being exploited?
There is no known exploitation of CVE-2026-45173 in the wild and no public exploit code.
Sources
Also known as GHSA-mmjg-x39c-438q.