CVE-2026-9561
X-Forwarded-For trust in Eclipse Kura <5.6.2 allows brute-force bypass and third-party IP DoS
Is CVE-2026-9561 being exploited?
Not confirmed. CVE-2026-9561 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 0.19% probability of exploitation in the next 30 days.
How severe is CVE-2026-9561?
CVE-2026-9561 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-2026-9561?
Yes. A fix has been recorded for CVE-2026-9561. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-9561 affect?
CVE-2026-9561 affects Eclipse Kura <5.6.2, org.eclipse.kura.web2 (Web Console), org.eclipse.kura.rest.provider (REST API), org.eclipse.kura.jetty.customizer, and 2 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-9561?
Upgrade to Eclipse Kura 5.6.2 or disable/validate X-Forwarded-For on ingress
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can spoof client IP via X-Forwarded-For to bypass IP-based brute-force protections or trigger bans on victim IPs (DoS/evade detection).
Immediate action required
- affected>= 5.0.0 and <= 5.6.1
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.