Apache Camel CXF Information Disclosure via Unmuted Consumer Exceptions
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-209.
Summary
Apache Camel from 4.0.0 before 4.18.5 and from 4.19.0 before 4.22.1 has a CXF component flaw that generates an error message containing sensitive information (CWE-209). When a route behind a CXF SOAP consumer fails with an exception the service contract does not declare, the exception is copied into the SOAP fault, which can reveal class names, package names and exception messages. An external caller who can provoke such a failure can read internal details about the deployment.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Description from the CNA
Generation of Error Message Containing Sensitive Information vulnerability in Apache Camel CXF component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. When a route behind a CXF SOAP consumer failed with an exception the service contract does not declare, the exception was described back to the SOAP client in the fault: CXF copies the message into the SOAP faultstring, and can be configured to place the stack trace in the fault detail. An external caller able to provoke a failure could therefore read internal detail about the deployment - class and package names, and whatever the exception message carries. Declared faults, annotated @WebFault, are a different matter: those are part of the published contract that clients are written against, and suppressing them would break the service rather than protect anything. Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. A muteException consumer option, defaulting to true, replaces an undeclared route failure with a generic fault carrying no class name, message or stack trace. Faults the contract declares are reported exactly as before. Set muteException=false to restore the previous output. For deployments that cannot upgrade immediately, declare the exceptions the service is allowed to report and map every other failure onto one of them in an onException handler, so no undeclared exception reaches the fault.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS stream should upgrade to 4.18.5, and users on the 4.22.x LTS stream should upgrade to 4.22.1. Red Hat reports no fix plan yet for Red Hat build of Apache Camel 4 for Quarkus 3 or Red Hat build of Apache Camel for Spring Boot 4. Deployments that cannot upgrade can declare the exceptions the service may report and map every other failure onto one of them in an onException handler.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
- Fix · CNA Apache Camel (Apache Software Foundation) Fixed in 4.18.5, 4.22.1, 4.23.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache Camel 4.18.5, 4.22.1
39 records Highest priority Priority HIGH 6 HIGH, 9 MEDIUM, 24 LOW
Other records, highest priority first
- TI-2026-76322 Unsafe deserialization in Apache Camel camel-hazelcastPriority HIGH 82
- TI-2026-76339 Path traversal in Apache Camel azure-files componentPriority HIGH 74
- TI-2026-76330 Path traversal in Apache Camel FTP consumer escapes polled directoryPriority HIGH 74
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat build of Apache Camel 4 for Quarkus 3 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel for Spring Boot 4 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-19 Threatist record created from CVE-2026-85257
- 2026-10-19 Alias added: GHSA-g4w9-7494-9r66
- 2026-10-19 CISA SSVC decision points changed
- 2026-11-04 EPSS moved to the 50th–90th percentile
- 2026-11-04 Affected versions changed · Red Hat
- 2026-11-04 CVSS score added · Red Hat
References
Patch 5
- Apache Camel Security Advisory - CVE-2026-85257
- CAMEL-24477
- Fix on main, released in 4.23.0 (commit fd4fd273e4d1d36c1341cc8cf08405decd8c755c)
- Backport to camel-4.22.x, released in 4.22.1 (commit 9a6e8222085ed12f73ce76f826aeb69e9d111ff8)
- Backport to camel-4.18.x, released in 4.18.5 (commit e6986906e41b3e537d3a5d278525bc09b78b4127)
More Apache Camel vulnerabilities
- TI-2026-76322 Unsafe deserialization in Apache Camel camel-hazelcast CVSS 4.0CRITICAL 10.0
- TI-2026-18973 Apache Camel: Camel-Keycloak: Cross-Realm Token Acceptance Bypass in KeycloakSecurityPolicy CVSS 3.1CRITICAL 9.1
- TI-2026-76339 Path traversal in Apache Camel azure-files component CVSS 3.1CRITICAL 9.1
- TI-2026-76330 Path traversal in Apache Camel FTP consumer escapes polled directory CVSS 3.1CRITICAL 9.1
- TI-2025-20435 Apache Camel: Camel Message Header Injection via Improper Filtering CVSS 3.1MEDIUM 5.6
- TI-2026-34899 Apache Camel: Camel-CXF Message Header Injection via Missing Inbound Filtering CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-85257 · CVE Program
- CVE-2026-85257 · NVD
- FIRST EPSS
- GHSA-g4w9-7494-9r66 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-85257 · Red Hat security data · CC BY 4.0
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