CVE-2026-45173

Idira Identity Browser Extension: Unauthorized Application Interaction via Origin Validation Failure

MEDIUM
6.5
CVSS Score
Published: June 11, 2026 at 09:33 PM UTC
Updated: October 26, 2026 at 11:10 AM UTC
2 products affected across 2 vendorsIdira Identity Browser ExtensionIdira Identity Browser Extension· also runs on 3 platforms

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

26.0.0 ≤ v < 26.8.1
Affected range stops below 26.8.1, so it looks safe — our inference, not a vendor statement
google-chrome (environment) · microsoft-edge-chromium (environment) · mozilla-firefox (environment)
26.0.0 ≤ v < 26.8.126.0.0
Affected range stops below 26.8.1, so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-346

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