CVE-2026-23552Public exploitNetwork attack vector

Cross-realm route access via unchecked JWT issuer

Published Feb 23, 2026 · Updated Feb 23, 2026

Authentication bypass in Apache Camel 4.15.0 through 4.17.0 allows remote attackers to access routes across Keycloak realms. KeycloakSecurityHelper.parseAccessToken decodes the JWT without comparing its iss claim to the realm configured in KeycloakSecurityPolicy. A valid token from another realm with a matching role reaches protected routes, enabling cross-tenant data access and privilege use.

CVSS severity9.1
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Apache Camel 4.15.0 through 4.17.0 allows remote attackers to access routes across Keycloak realms. KeycloakSecurityHelper.parseAccessToken decodes the JWT without comparing its iss claim to the realm configured in KeycloakSecurityPolicy. A valid token from another realm with a matching role reaches protected routes, enabling cross-tenant data access and privilege use.

The record

CVE
CVE-2026-23552
Published
Feb 23, 2026
Updated
Feb 23, 2026
Vendor
The Apache Software Foundation
Product
Apache Camel
Classifications
CWE-346, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 23, 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=4.15.0 <4.18.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Camelversion=4.15.0 <4.18.0

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-346Origin Validation Error
T1078Valid Accounts

Public exploit references

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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