Apache Camel is a widely used enterprise integration framework; this flaw lets an attacker send expressions that run in the Camel JVM, enabling RCE across integrations.
CVE-2026-83531
Expression-language injection in Apache Camel dynamic-router-control enabling RCE.
Is CVE-2026-83531 being exploited?
Not confirmed. CVE-2026-83531 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.
How severe is CVE-2026-83531?
CVE-2026-83531 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-2026-83531?
Yes. A fix has been recorded for CVE-2026-83531. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-83531 affect?
CVE-2026-83531 affects Apache Camel 4.4.0 through before 4.18.5, Apache Camel 4.19.0 through before 4.22.1, Deployments using dynamic-router-control endpoint. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-83531?
Upgrade to 4.23.0 (or 4.22.1 / 4.18.5) and block/untrust transports to dynamic-router-control.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution / privilege escalation in the Camel JVM by sending crafted control messages that evaluate attacker-controlled expressions.
Immediate action required
- affected>= 4.4.0 and < 4.18.5
- affected>= 4.19.0 and < 4.22.1
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.