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CVE-2026-40473 Apache camel

Affected softwareApache camel
Severity8.8 High CVSS 3.1 2 scores
Fixed in4.14.6, 4.18.2, 4.20.0
WeaknessDeserialization of untrusted data (CWE-502)
Published27 Apr 2026
Updated26 Oct 2026

Description

The camel-mina component's MinaConverter.toObjectInput(IoBuffer) type converter wraps an IoBuffer in a java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. When a Camel route uses camel-mina as a TCP or UDP consumer and requests conversion to ObjectInput (for example via getBody(ObjectInput.class) or @Body ObjectInput), an attacker sending a crafted serialized Java object over the network to the MINA consumer port can trigger arbitrary code execution in the context of the application during readObject(). This issue affects Apache Camel: from 3.0.0 before 4.14.6, from 4.15.0 before 4.18.2, from 4.19.0 before 4.20.0. Users are recommended to upgrade to version 4.20.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.2.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. The 1 repository below are public GitHub repositories with fewer than 5 stars.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC 1 indexed, none at 5+ stars
  • EPSS 1.2% chance in 30 days

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

IndexArtifactStarsFirst seen
GitHub PoC Reproducer for CVE-2026-40473: Apache Camel camel-mina MinaConverter.toObjectInput unsafe deserialization (RCE over TCP/UDP) 2026-07-09

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

Decided by A vulnerability class already blocked by an ARMR security rule
Finding Protected by Waratek's ARMR deserialization security rule, which blocks this class of attack at the JVM level without a rule written for this CVE specifically. The CVE's weakness is CWE-502: Deserialization of Untrusted Data.
Candidate fix https://bugzilla.redhat.com/show_bug.cgi?id=2463180 : a Red Hat bug: the triage, which links onward to the fix

How to mitigate CVE-2026-40473

Upgrade Apache camel to a release that fixes it: 4.14.6, 4.18.2 or 4.20.0. Until you can, Waratek RASP blocks exploitation with its deserialization and process rules. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

CVSS

8.8 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CISA-ADP Secondary published
CVSS 3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H redhat-SADP Secondary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.camel:camel-mina 3.0.0 4.14.6 unbounded
org.apache.camel:camel-mina 4.15.0 4.18.2 unbounded
org.apache.camel:camel-mina 4.19.0 4.20.0 unbounded

Products and versions

2 products, 6 version entries
SourceVendorProductSchemeAffected versions
nvd apache camel generic ≥ 3.0.0 and < 4.14.6 · ≥ 4.15.0 and < 4.18.2 · 4.19.0
osv org.apache.camel camel-mina generic ≥ 3.0.0 and < 4.14.6 · ≥ 4.15.0 and < 4.18.2 · ≥ 4.19.0 and < 4.20.0

References

URLTags
https://bugzilla.redhat.com/show_bug.cgi?id=2463180 bugzilla
https://github.com/apache/camel/pull/22583 WEB
https://github.com/apache/camel/pull/22584 WEB
https://github.com/apache/camel/pull/22585 WEB
https://github.com/apache/camel/commit/8e7f6335d2b4b096df26f8221723405ceaee275a WEB
https://github.com/apache/camel/commit/b605816d11c253d22989abc290c198be83e3f817 WEB
https://github.com/apache/camel/commit/c35b0a3720f8c80025b06112d5d9c2932426d7f0 WEB
https://camel.apache.org/security/CVE-2026-40473.html WEB
https://github.com/apache/camel PACKAGE
https://issues.apache.org/jira/browse/CAMEL-23319 WEB

Timeline

Published2026-04-27By the CVE Program.
NVD record modified2026-10-26NVD's own last-modified date for this record.