8.4

CVE-2026-45173: cyberark software, a palo alto networks company identity browser extensions Origin Validation Error

CVSS: 8.4v4.0HighAnalyzed
Published 11-06-2026Last modified 12-06-2026
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Vulnerability summary

CVE-2026-45173 is a high (CVSS 8.4) Origin Validation Error vulnerability in cyberark software, a palo alto networks company identity browser extensions. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.2% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.4/10
010
High · v4.0 (CVE.org)
EPSS score
0.21%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-06-2026
    PublishedVulnerability first disclosed.
  2. 12-06-2026
    Last modifiedVulnerability information updated.

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

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

+0.05 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cyberark software, a palo alto networks company1 product
Paloaltonetworks1 product

2 vendors · 2 products

References

1 links