# CVE-2026-40858: Apache Camel: Camel-Infinispan: Unsafe Deserialization in Remote Aggregation Repository > An attacker with write access to the Infinispan cache can achieve arbitrary code execution in Apache Camel applications via unsafe deserialization. - **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 27 Apr 2026 - **Updated:** 9 Sep 2026 - **Also known as:** GHSA-4xwx-hvv7-7prj ## What is CVE-2026-40858? CVE-2026-40858 is a high-severity unsafe deserialization vulnerability in Apache Camel, published on 27 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description 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. Weakness: CWE-502 (Deserialization of Untrusted Data) ## Which versions are affected by CVE-2026-40858? 6 open source packages ship an affected version, including org.apache.camel:camel-infinispan. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `org.apache.camel:camel-infinispan` | Maven | From 4.0.0 | 4.14.7 | | `org.apache.camel:camel-infinispan` | Maven | From 4.0.0 | 4.14.7 | | `org.apache.camel:camel-infinispan` | Maven | From 4.15.0 | 4.18.2 | | `org.apache.camel:camel-infinispan` | Maven | From 4.15.0 | 4.18.2 | | `org.apache.camel:camel-infinispan` | Maven | From 4.19.0 | 4.20.0 | | `org.apache.camel:camel-infinispan` | Maven | From 4.19.0 | 4.20.0 | Products: Apache Camel. ## How do I fix CVE-2026-40858? Upgrade org.apache.camel:camel-infinispan to a fixed version for your release line: 4.14.7, 4.18.2 or 4.20.0. ## Is CVE-2026-40858 being exploited? There is no known exploitation of CVE-2026-40858 in the wild and no public exploit code. Public exploit code: - Reproducer for CVE-2026-40858 — Apache Camel camel-infinispan remote aggregation repository unsafe deserialization (RCE) (github_poc): https://github.com/oscerd/CVE-2026-40858 ## Other vulnerabilities in Apache Camel - [CVE-2026-33453](https://insights.sbomify.com/CVE-2026-33453/): Apache camel-coap allows header injection that can lead to remote code execution (critical 10.0) - [CVE-2026-40453](https://insights.sbomify.com/CVE-2026-40453/): Apache Camel has an incomplete fix for CVE-2025-27636 (critical 9.9) - [CVE-2026-80351](https://insights.sbomify.com/CVE-2026-80351/): Apache Camel K: Camel K Tenant repositories reach Maven execution inside operator pod (critical 9.8) - [CVE-2026-80352](https://insights.sbomify.com/CVE-2026-80352/): Apache Camel K: Camel K Master trait serviceAccountName YAML injection lets CR author apply arbitrary objects (critical 9.8) - [CVE-2026-71300](https://insights.sbomify.com/CVE-2026-71300/): Apache Camel: Camel-Atmosphere-Websocket: WebSocket dispatch header injection (critical 9.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-40858 and fix it if it is affected. What it is: CVE-2026-40858 is a high-severity unsafe deserialization vulnerability in Apache Camel, published on 27 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2026-40858 in the wild and no public exploit code. Affected packages and fixed versions: - org.apache.camel:camel-infinispan (Maven): affected from 4.0.0; fixed in 4.14.7 - org.apache.camel:camel-infinispan (Maven): affected from 4.0.0; fixed in 4.14.7 - org.apache.camel:camel-infinispan (Maven): affected from 4.15.0; fixed in 4.18.2 - org.apache.camel:camel-infinispan (Maven): affected from 4.15.0; fixed in 4.18.2 - org.apache.camel:camel-infinispan (Maven): affected from 4.19.0; fixed in 4.20.0 - org.apache.camel:camel-infinispan (Maven): affected from 4.19.0; fixed in 4.20.0 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2026-40858/ (Markdown: https://insights.sbomify.com/CVE-2026-40858/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40858 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40858 - OSV: https://osv.dev/vulnerability/CVE-2026-40858 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-40858/ Summaries are generated and may contain mistakes; the official description above is the record.