CVE-2026-45173Network attack vector

Application interaction via improper webpage origin validation

Published Jun 11, 2026 · Updated Jun 11, 2026

Origin validation error in CyberArk Identity Browser Extension 26.0.0 through 26.8.0 allows remote attackers to alter application interactions. CyberArk identifies internal web-page verification routines as the locus, but has not disclosed which routine accepts an untrusted origin or how it authorizes parameters. Exploitation requires an authenticated user to navigate to a crafted webpage, after which attacker-controlled parameters act within that browser session.

CVSS severity8.4
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Origin validation error in CyberArk Identity Browser Extension 26.0.0 through 26.8.0 allows remote attackers to alter application interactions. CyberArk identifies internal web-page verification routines as the locus, but has not disclosed which routine accepts an untrusted origin or how it authorizes parameters. Exploitation requires an authenticated user to navigate to a crafted webpage, after which attacker-controlled parameters act within that browser session.

The record

CVE
CVE-2026-45173
Published
Jun 11, 2026
Updated
Jun 11, 2026
Vendor
CyberArk
Product
Identity Browser Extension
Classifications
CWE-346, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=26.0.0 <26.8.1 changes=[{"at":"26.8.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CyberArk · Identity Browser Extensionversion=26.0.0 <26.8.1 changes=[{"at":"26.8.1","status":"unaffected"}]

Published CVSS scores

6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
8.4Palo Alto Networks, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:H/SI:H/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-346Origin Validation Error
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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