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Medium 2 vendors · 2 advisories

CVE-2026-85254: Improper Handling of Case Sensitivity vulnerability in Apache Camel Platform HTTP component

CVE-2026-85254 key facts

CISA KEV
Not listed (catalogue checked )
Highest advisory rating
Medium
CVSS base score
6.5 (Apache), 6.5 (Red Hat)
Weakness
CWE-178
Fixed releases
  • Apache: 4.18.5, 4.22.1
  • Red Hat: 4.23.0, 4.18, 4.18.5, 4.22, 4.22.1
Vendor advisories
2 from Apache, Red Hat
Listed by VulniPulse
Record changed

Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-85254; each belongs to its advisory, not to every product listed. How records are collected and checked.

How do I fix CVE-2026-85254?

Upgrade to a fixed release named by the vendor:

  • Apache: 4.18.5, 4.22.1
  • Red Hat: 4.23.0, 4.18, 4.18.5, 4.22, 4.22.1
  • Upgrade to Apache Camel 4.23.0, which fixes the issue. (Apache)
  • Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. (Apache)

Vendor advisories for CVE-2026-85254

Apache

1 advisory
  • Advisory severityMedium6.5

    Medium [CVE-2026-85254] Improper Handling of Case Sensitivity vulnerability in Apache Camel Platform HTTP component

    CVE-2026-85254Source published Source updated

    Improper Handling of Case Sensitivity vulnerability in Apache Camel Platform HTTP component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The guard that prevents a request header being reflected into the response compared header names case sensitively, while HTTP header names are case insensitive. A caller could therefore defeat the suppression simply by varying the case of the header name. HTTP/2 makes the problem unconditional rather than optional: the protocol requires header names to be lowercase on the wire, so the comparison never matched and the suppression was inert for every request on an HTTP/2 connection. The consequence is that content the caller chose is echoed back in the response, which is the basis for response-splitting and…

    Affected products in this advisory
    • Apache Camel Platform
    Source-reported affected versions
    • 4.0.0 before 4.18.5
    • 4.19.0 before 4.22.1
    Source-reported fixed versions
    • 4.18.5
    • 4.22.1
    Mitigation guidance
    • 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 headers in question in front of the Camel endpoint, or remove them from the response in the route rather than relying on the built-in suppression.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium6.5

    Medium [CVE-2026-85254] HTTP response splitting via case-sensitive header suppression

    CVE-2026-85254Source published Source updated

    HTTP response splitting via case-sensitive header suppression. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-178. Affected products named by the advisory: OpenShift Serverless; Red Hat build of Apache Camel 4 for Quarkus 3; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Fuse 7.

    Related products — impact not confirmed
    • OpenShift Serverless
    • Red Hat build of Apache Camel 4 for Quarkus 3
    • Red Hat build of Apache Camel for Spring Boot 4
    • Red Hat Fuse 7
    Source-reported affected versions
    • < 4.0.0
    • < 4.18.5
    • < 4.19.0
    • < 4.22.1
    Source-reported fixed versions
    • 4.23.0
    • 4.18
    • 4.18.5
    • 4.22

    1 more entries in the full advisory.

    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

References

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