CVE-2026-85254

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Source
https://cve.org/CVERecord?id=CVE-2026-85254
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85254.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-85254
Published
2026-10-19T10:36:46Z
Modified
2026-10-21T03:00:30Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Apache Camel: Camel-Platform-HTTP Request-Header Echo Suppression Bypassed by Header-Name Casing
Details

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 cache-poisoning style attacks against whatever sits in front of the Camel endpoint.

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. Request header names are now compared case insensitively, so the suppression holds regardless of casing and works under HTTP/2. 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.

Database specific 
{
    "cna_assigner":  "apache",
    "cwe_ids":  [
        "CWE-178"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85254.json"
}
References

Affected packages

Git / github.com/apache/camel

Affected ranges

Type
GIT
Repo
https://github.com/apache/camel
Events
Introduced
8d135894cd73970c82da5da0dc71ecc7f5521ad5
Fixed
2a16fcefbc5e4512a80180fae12c1f0f9ca0dff0
Introduced
3e9f3011ad48de66fef582ade9794c7340c23af7
Fixed
c056bef67cdfeffdc0ad7255e5e052cab71f2921
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.0.0"
                },
                {
                    "fixed":  "4.18.5"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "introduced":  "4.19.0"
                },
                {
                    "fixed":  "4.22.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85254.json"