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CVE Record

CVE-2026-40858: Apache Camel: Camel-Infinispan: Unsafe Deserialization in Remote Aggregation Repository

The camel-infinispan component's ProtoStream-based remote aggregation repository deserializes data read from a remote Infinispan cache using java.io.ObjectInputStream without applying any ObjectInputFilter. An attacker who can write to the Infinispan cache used by a Camel application can inject a crafted serialized Java object that, when read during normal aggregation repository operations such as get or recover, results in arbitrary code execution in the context of the application. This issue affects Apache Camel: from 4.0.0 before 4.14.7, from 4.15.0 before 4.18.2, from 4.19.0 before 4.20.0. Users are recommended to upgrade to version 4.20.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.7. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.2. The JIRA ticket: https://issues.apache.org/jira/browse/CAMEL-23322 refers to the various commits that resolved the issue, and have more details. This issue follows the same class of vulnerability previously addressed in CVE-2024-22369, CVE-2024-23114 and CVE-2026-25747.

HighCVSS 8.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A compromised or untrusted writer to an application’s remote Infinispan cache could place malicious data that Apache Camel later processes, potentially running attacker-controlled code with the application’s permissions. Exposure is limited to affected Camel versions using the camel-infinispan remote aggregation repository; merely running Camel is insufficient.

Executive priority

Prioritize rapid remediation for internet-facing or high-value applications where untrusted or compromised identities can write to the relevant cache. Successful exploitation could fully compromise the Camel application and disrupt dependent integrations. Lower the priority only after confirming the vulnerable component or remote aggregation repository is absent, or cache writes are strongly constrained.

Technical view

The ProtoStream-based remote aggregation repository uses java.io.ObjectInputStream without an ObjectInputFilter. Crafted serialized Java objects written into the associated Infinispan cache can trigger arbitrary code execution when normal repository operations, including get or recover, deserialize them. Affected ranges are 4.0.0–4.14.6, 4.15.0–4.18.1, and 4.19.x before 4.20.0.

Likely exposure

Highest where an affected camel-infinispan dependency backs a remote aggregation repository and an attacker can write to its Infinispan cache. Network reachability alone does not establish exploitability; cache write authorization or another cache-write path is required. Applications not using this component and repository mode are not shown as exposed by the supplied evidence.

Exploitation context

CVSS 3.1 is 8.8: network-accessible, low complexity, low privileges, no user interaction, with high confidentiality, integrity, and availability impact. The supplied record is not in KEV and provides no evidence of active exploitation. It identifies cache write access as the necessary attacker capability.

Researcher notes

This is CWE-502 unsafe deserialization and follows the same vulnerability class as CVE-2024-22369, CVE-2024-23114, and CVE-2026-25747. Assessment should distinguish package presence from reachable behavior: vulnerable deserialization occurs when repository operations read attacker-controlled cache entries. The supplied sources do not document public proof-of-concept availability, exploitation telemetry, or specific detection indicators.

Mitigation direction

  • Upgrade 4.14.x deployments to 4.14.7 or later within that supported stream.
  • Upgrade 4.18.x deployments to 4.18.2 or later within that supported stream.
  • Upgrade other affected deployments to Apache Camel 4.20.0 or later.
  • Until upgraded, tightly restrict write access to the application’s Infinispan cache.

Validation and detection

  • Inventory org.apache.camel:camel-infinispan versions in applications and resolved dependency trees.
  • Confirm whether each application configures the ProtoStream-based remote aggregation repository.
  • Verify affected deployments now resolve to 4.14.7, 4.18.2, or 4.20.0 as applicable.
  • Review Infinispan authentication and authorization to identify principals capable of writing to the relevant cache.
  • After upgrading, exercise normal aggregation get and recovery workflows through regression testing.
Prepared
Confidence
high
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-502: Code execution behavior lookup

Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2026-40858 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
7Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9CISA-ADP
8.8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2026-40858Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
redhat-SADPorg.apache.camel/camel-infinispan: Apache Camel camel-infinispan: Arbitrary code execution via deserialization of untrusted data
other:Red Hat severity ratingcvssV3_1
  • 2026-04-27T10:01:35.538Z: Reported to Red Hat.
  • 2026-04-27T09:38:55.466Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Apache Software FoundationApache Camelorg.apache.camel:camel-infinispan, 4.0.0, 4.15.0, 4.19.0unaffected
Weakness

CWE details

CWE-502

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-502 · source CWE mapping

Deserialization of Untrusted Data

Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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