Vulnerability-Lookup

CVE-2026-85254 (GCVE-0-2026-85254)

Vulnerability from cvelistv5 – Published: 2026-10-19 10:36 – Updated: 2026-10-19 16:48

Title

Apache Camel: Camel-Platform-HTTP Request-Header Echo Suppression Bypassed by Header-Name Casing

Summary

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.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-19 16:48 UTC

CWE

CWE-178 - Improper Handling of Case Sensitivity

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1004 records in the last 180 days details

References

5 references

URL	Tags
https://camel.apache.org/security/CVE-2026-85254.html	vendor-advisory
https://issues.apache.org/jira/browse/CAMEL-24453	issue-tracking
https://github.com/apache/camel/pull/25831	patch
https://github.com/apache/camel/pull/25940	patch
https://github.com/apache/camel/pull/25942	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache Camel	Affected: 4.0.0 , < 4.18.5 (maven) Affected: 4.19.0 , < 4.22.1 (maven) Unaffected: 4.18.5 (maven) Unaffected: 4.22.1 (maven) Unaffected: 4.23.0 (maven)	guessed

Credits

Claude Security Andrea Cosentino

Show details on NVD website

JSON

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                  "value": "\u003cp\u003eUpgrade 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.\u003c/p\u003e"
                }
              ],
              "value": "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."
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Apache Camel: Camel-Platform-HTTP Request-Header Echo Suppression Bypassed by Header-Name Casing",
          "workarounds": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eFor 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.\u003c/p\u003e"
                }
              ],
              "value": "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."
            }
          ],
          "x_generator": {
            "engine": "Vulnogram 1.0.3"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "assignerShortName": "apache",
        "cveId": "CVE-2026-85254",
        "datePublished": "2026-10-19T10:36:46.283Z",
        "dateReserved": "2026-09-03T16:33:22.096Z",
        "dateUpdated": "2026-10-19T16:48:42.551Z",
        "state": "PUBLISHED"
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      "dataVersion": "5.2"
    }
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}

FKIE_CVE-2026-85254

Vulnerability from fkie_nvd - Published: 2026-10-19 11:17 - Updated: 2026-10-19 17:17

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Summary

References

	URL	Tags
	security@apache.org	https://camel.apache.org/security/CVE-2026-85254.html
	security@apache.org	https://github.com/apache/camel/pull/25831
	security@apache.org	https://github.com/apache/camel/pull/25940
	security@apache.org	https://github.com/apache/camel/pull/25942
	security@apache.org	https://issues.apache.org/jira/browse/CAMEL-24453

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.camel:camel-platform-http",
          "packageURL": "pkg:maven/org.apache.camel/camel-platform-http",
          "product": "Apache Camel",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "4.18.5",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "maven"
            },
            {
              "lessThan": "4.22.1",
              "status": "affected",
              "version": "4.19.0",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "4.18.5",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "4.22.1",
              "versionType": "maven"
            },
            {
              "status": "unaffected",
              "version": "4.23.0",
              "versionType": "maven"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Handling of Case Sensitivity vulnerability in Apache Camel Platform HTTP component.\n\nThis issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1.\n\nThe 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.\n\nUpgrade 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."
    }
  ],
  "id": "CVE-2026-85254",
  "lastModified": "2026-10-19T17:17:23.883",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "security@apache.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-85254",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-19T16:48:28.484546Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-19T11:17:23.553",
  "references": [
    {
      "source": "security@apache.org",
      "url": "https://camel.apache.org/security/CVE-2026-85254.html"
    },
    {
      "source": "security@apache.org",
      "url": "https://github.com/apache/camel/pull/25831"
    },
    {
      "source": "security@apache.org",
      "url": "https://github.com/apache/camel/pull/25940"
    },
    {
      "source": "security@apache.org",
      "url": "https://github.com/apache/camel/pull/25942"
    },
    {
      "source": "security@apache.org",
      "url": "https://issues.apache.org/jira/browse/CAMEL-24453"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-178"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

GHSA-9JFP-C25Q-RF5Q

Vulnerability from github – Published: 2026-10-19 12:32 – Updated: 2026-10-19 12:32

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.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-85254"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-19T11:17:23Z",
    "severity": "MODERATE"
  },
  "details": "Improper Handling of Case Sensitivity vulnerability in Apache Camel Platform HTTP component.\n\nThis issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1.\n\nThe 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.\n\nUpgrade 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.",
  "id": "GHSA-9jfp-c25q-rf5q",
  "modified": "2026-10-19T12:32:51Z",
  "published": "2026-10-19T12:32:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85254"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/camel/pull/25831"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/camel/pull/25940"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/camel/pull/25942"
    },
    {
      "type": "WEB",
      "url": "https://camel.apache.org/security/CVE-2026-85254.html"
    },
    {
      "type": "WEB",
      "url": "https://issues.apache.org/jira/browse/CAMEL-24453"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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CVE-2026-85254 (GCVE-0-2026-85254)

FKIE_CVE-2026-85254

GHSA-9JFP-C25Q-RF5Q

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