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Apache Camel: Camel-AS2 Cross-Partner Signing Key Confusion via Shared Per-Request State

Type: advisorySource: Official CVE List1 source record

Exposure of Data Element to Wrong Session vulnerability in Apache Camel AS2 component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. Signing material belonging to an individual request was stored in state that is shared across requests rather than confined to the request being processed. Where a deployment serves more than one trading partner, concurrent or successive requests could therefore observe each other's material, and a Message Disposition Notification could be signed with the key of a partner other than the one the receipt was for. The result is cross-partner key confusion: a receipt attributable to the wrong partner, and one partner's signing material used while handling another partner's exchange. AS2 deployments are typically multi-partner by design, so the condition is reached by ordinary concurrent traffic rather than by anything the attacker must arrange. 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. Per-request signing keys are now confined to the request being processed in ResponseMDN. For deployments that cannot upgrade immediately, run a separate Camel context per trading partner so that no signing material is shared between them.

Announced Source revision 1
Original source ↗

CVE-2026-85296

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-85296

Apache Camel

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Apache Software Foundation",
    "product": "Apache Camel",
    "versions": [
      {
        "status": "affected",
        "version": "4.0.0",
        "lessThan": "4.18.5",
        "versionType": "maven"
      },
      {
        "status": "affected",
        "version": "4.19.0",
        "lessThan": "4.22.1",
        "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"
      }
    ],
    "packageURL": "pkg:maven/org.apache.camel/camel-as2",
    "packageName": "org.apache.camel:camel-as2",
    "collectionURL": "https://repo.maven.apache.org/maven2",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-85296

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#39042 · Revision 1
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Publisher date
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