Idira Identity Browser Extension: Unauthorized Application Interaction via Origin Validation Failure
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-346.
Summary
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
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| CyberArk Software, a Palo Alto Networks Company | Identity Browser Extensions | 26.0.0 to before 26.8.1 | 26.8.1 | Patch available | CNA |
- Identity Browser Extensions VendorCyberArk Software, a Palo Alto Networks Company Affected 26.0.0 to before 26.8.1 Fixed in 26.8.1 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:paloaltonetworks:idira_identity_browser_extension:*:*:*:*:*:-:*:* | 26.0.0 to before 26.8.1 | Vulnerable | CyberArk Software, a Palo Alto Networks Company |
| cpe:2.3:a:google:chrome:-:*:*:*:*:*:*:* | not specified by NVD | Running on | |
| cpe:2.3:a:microsoft:edge_chromium:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:mozilla:firefox:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mozilla |
- cpe:2.3:a:paloaltonetworks:idira_identity_browser_extension:*:*:*:*:*:-:*:* Versions 26.0.0 to before 26.8.1 Vulnerable ·CyberArk Software, a Palo Alto Networks Company
- cpe:2.3:a:google:chrome:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Google
- cpe:2.3:a:microsoft:edge_chromium:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:mozilla:firefox:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mozilla
Remediation
- Fix · CNA Identity Browser Extensions (CyberArk Software, a Palo Alto Networks Company) Fixed in 26.8.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-45173
- 2026-10-03 Alias added: GHSA-mmjg-x39c-438q
References
Sources
- CVE-2026-45173 · CVE Program
- CVE-2026-45173 · NVD
- FIRST EPSS
- GHSA-mmjg-x39c-438q · GitHub Advisory Database · CC BY 4.0
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