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Advisory severityMedium4.8Apache Software Foundation

Medium [CVE-2026-85312] Improper Input Validation vulnerability in Apache Camel Core component

This medium-severity Apache Software Foundation advisory covers CVE-2026-85312 affecting Apache Camel Core.

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CVE-2026-85312 Source published Source updated

VulniPulse record published Record updated

CVE-2026-85312
Affected products & platforms
Apache Software FoundationMessaging
Open source advisory

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Summary

Improper Input Validation vulnerability in Apache Camel Core component.

This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1.

The saga processor consulted a header named Long-Running-Action to decide which saga an exchange belonged to. The name carries no Camel prefix, so it sits outside the namespace that consumer header filters block, and an external sender could supply it on an inbound message.

That let the sender name the saga the exchange joined, attaching their request to a long-running action started by someone else, or causing compensation to be associated with an action they did not initiate. The header is only consulted by a saga service that uses it, which bounds the exposure to deployments running sagas over an LRA coordinator.

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.

The header is now consulted only for a saga service that actually uses it, rather than on every exchange. For deployments that cannot upgrade immediately, strip the header at the trust boundary with removeHeaders("Long-Running-Action") on every consumer that accepts messages from an untrusted sender.

Affected versions
  • 4.0.0 before 4.18.5
  • 4.19.0 before 4.22.1

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

Fixed versions
  • 4.18.5
  • 4.22.1

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • 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.
  • For deployments that cannot upgrade immediately, strip the header at the trust boundary with removeHeaders("Long-Running-Action") on every consumer that accepts messages from an untrusted sender.
Temporary workarounds
  • The name carries no Camel prefix, so it sits outside the namespace that consumer header filters block, and an external sender could supply it on an inbound message.

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

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