CVE-2026-40858: The camel-infinispan component's ProtoStream-based remote aggregation repository deserializes data read from a

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HIGH 8.8WATCHLISTUPGRADE

CVE-2026-40858 is a high-severity flaw (CVSS 8.8) affecting camel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 executi

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-04-27
Last modified	2026-10-26

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-27 10:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

apache camel UPGRADE

Affected: >= 4.0.0 and < 4.14.7 · >= 4.15.0 and < 4.18.2 · 4.19.0

Fixed in: 4.14.7, 4.18.2

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy camel || rpm -q camel || camel --version

2. UPGRADE to 4.14.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade camel

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade camel

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.0.0 (Debian / Ubuntu)

apt-cache madison camel sudo apt install camel=<VERSION_BEFORE_4.0.0> sudo apt-mark hold camel

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list camel sudo dnf downgrade camel-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add camel

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40858?

camel: upgrade to 4.14.7, 4.18.2. Exact commands for each OS are on this page.

Is CVE-2026-40858 being exploited?

CVE-2026-40858 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40858 affect?

CVE-2026-40858 affects camel. Severity is high (CVSS 8.8). 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

How urgent is CVE-2026-40858?

Priority 53/100. High severity; On your watchlist

Software pages

Java vulnerabilities

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References

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