TI-2026-47481 Aliases CVE-2026-66909 GHSA-gvw8-rcrx-9fxx

Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage

MEDIUM 51CWE-502Published 2026-08-06 · Updated 2026-08-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 2 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-502.

Summary

Apache CXF's JMS transport deserializes the body of any inbound JMS ObjectMessage using native Java deserialization, with no type restrictions in place. Any attacker able to place a message on the service's JMS destination can submit a malicious serialized object, leading to denial of service or, if a suitable gadget class is on the classpath, remote code execution. The fix disables ObjectMessage deserialization by default, with a configuration switch to re-enable it if needed. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01148 67th percentileScored 2026-11-07

Fix Partial Apache CXF (Apache Software Foundation): 4.2.3, 4.1.8, 3.6.12Red Hat: 2 advisoriesRed Hat: 2 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

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
Apache	Apache CXF	4.2.0 to before 4.2.3; 4.0.0 to before 4.1.8; before 3.6.12	4.2.3, 4.1.8, 3.6.12	Patch available	CNA

Apache CXF VendorApache Affected 4.2.0 to before 4.2.3; 4.0.0 to before 4.1.8; before 3.6.12 Fixed in 4.2.3, 4.1.8, 3.6.12 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:apache:cxf::::::::	before 3.6.12; 4.0.0 to before 4.1.8; 4.2.0 to before 4.2.3	Vulnerable	Apache

cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* Versions before 3.6.12; 4.0.0 to before 4.1.8; 4.2.0 to before 4.2.3 Vulnerable ·Apache

Remediation

Fix · CNA Apache CXF (Apache Software Foundation) Fixed in 4.2.3, 4.1.8, 3.6.12

Red Hat 2 advisories

RHSA-2026:95887 Released 2026-11-06 · Red Hat rating Important
Red Hat JBoss Enterprise Application Platform 8.1.9 security update
- Red Hat JBoss Enterprise Application Platform 8.1
RHSA-2026:71675 Released 2026-09-24 · Red Hat rating Important
Red Hat Build of Apache Camel 4.18.4 for Spring Boot release.
- Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-08-06
Apache CXF 3.6.12, 4.1.8, 4.2.3
12 records Highest priority Priority MEDIUM 10 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-47860 Apache CXF: DefaultEncryptingCodeDataProvider allows unlimited authorization code replayPriority MEDIUM 50
- TI-2026-46751 Apache CXF: Self-issued ID token claims validation skippedPriority MEDIUM 47
- TI-2026-45301 Apache CXF: JwtRequestCodeFilter silently overrides outer PKCE and nonce parametersPriority MEDIUM 47
Show all 12 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat JBoss Enterprise Application Platform 7	Affected	No fix yet
Red Hat Single Sign-On 7	Affected	No fix planned: Out of support scope
Red Hat JBoss Enterprise Application Platform 8.1	Fixed	RHSA-2026:95887
Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16	Fixed	RHSA-2026:71675

Not affected: 1 product

Red Hat JBoss Enterprise Application Platform Expansion Pack

Timeline

2026-10-02 Threatist record created from CVE-2026-66909
2026-10-03 Alias added: GHSA-gvw8-rcrx-9fxx
2026-10-05 Affected versions changed · Red Hat
2026-11-06 Fix available: RHSA-2026:95887 · Red Hat
2026-11-06 Fix available: Red Hat JBoss Enterprise Application Platform 8.1 · Red Hat

References

Advisory 1

https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx

TI-2019-09264 Incorrect authorization in Apache CXF CVSS 3.1CRITICAL 9.8
TI-2020-10930 Apache CXF Reflected XSS in the services listing page via the styleSheetPath CVSS 3.1MEDIUM 6.1
TI-2010-01990 Apache CXF 2.0.x before 2.0.13, 2.1.x before 2.1.10, and 2.2.x before 2.2.9, as used in… CVSS 3.1CRITICAL 9.8
TI-2022-22907 Apache CXF SSRF Vulnerability CVSS 3.1CRITICAL 9.8
TI-2025-31053 Apache CXF: Untrusted JMS configuration can lead to RCE CVSS 3.1CRITICAL 9.8
TI-2026-47860 Apache CXF: DefaultEncryptingCodeDataProvider allows unlimited authorization code replay CVSS 3.1CRITICAL 9.8

See all 79 →

Sources

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