Widely-used integration framework; enables RCE in many deployments.
CVE-2026-40858
RCE via deserialization in camel-infinispan when reading remote cache.
Is CVE-2026-40858 being exploited?
Not confirmed. CVE-2026-40858 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.93% probability of exploitation in the next 30 days.
How severe is CVE-2026-40858?
CVE-2026-40858 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-40858?
Yes. A fix has been recorded for CVE-2026-40858. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-40858 affect?
CVE-2026-40858 affects Apache Camel camel-infinispan component, Versions: 4.0.0-4.14.7, 4.15.0-4.18.2, 4.19.0-4.20.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-40858?
Upgrade to fixed version 4.20.0 (or 4.14.7/4.18.2 for streams).
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted serialized object read by ObjectInputStream during Infinispan cache operations; attacker needs cache write access.
Immediate action required
- affected>= 4.0.0 and < 4.14.7
- affected>= 4.15.0 and < 4.18.2
- affected>= 4.19.0 and < 4.20.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.