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TI-2026-08399 Aliases CVE-2026-9561GHSA-fqc6-vqq8-5xwp

Insufficient verification of data authenticity in Eclipse Kura

Priority MEDIUM 44CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-345.

Summary

Eclipse Kura versions prior to 5.6.2 trust the client-supplied X-Forwarded-For HTTP header as the authoritative source of the client IP address in audit log entries. The org.eclipse.kura.web2 (Web Console) and org.eclipse.kura.rest.provider (REST API) components use this header as the primary IP source when initializing audit context, and org.eclipse.kura.jetty.customizer unconditionally installs Jetty's ForwardedRequestCustomizer on all HTTP/HTTPS connectors, causing HttpServletRequest.getRemoteAddr() to reflect the attacker-controlled header value. An unauthenticated remote attacker can exploit this vulnerability to bypass IP-based brute-force protections — such as fail2ban — by spoofing the logged IP address to a non-routable value, allowing a brute-force attack to proceed undetected, or to cause a denial of service against a third party by injecting a victim's IP address and triggering a ban on that address.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00279 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Eclipse FoundationEclipse Kura5.0.0 – 5.6.1—No fix listedCNA
  • Eclipse Kura VendorEclipse Foundation Affected 5.0.0 – 5.6.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:eclipse:kura:*:*:*:*:*:*:*:*5.0.0 to before 5.6.2VulnerableEclipse Foundation
  • cpe:2.3:a:eclipse:kura:*:*:*:*:*:*:*:* Versions 5.0.0 to before 5.6.2 Vulnerable ·Eclipse Foundation

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9561
  2. 2026-10-03 Alias added: GHSA-fqc6-vqq8-5xwp

References

Exploit 1

  • TI-2017-05285 Improper authentication in Eclipse Kura Installer CVSS 3.0CRITICAL 9.8
  • TI-2024-02852 In Eclipse Kura LogServlet component included in versions 5.0.0 to 5.4.1, a specifically… CVSS 3.1HIGH 7.5
  • TI-2019-07559 XML external entity injection in Eclipse Kura CVSS 3.0HIGH 7.5
  • TI-2019-07557 Path traversal in Eclipse Kura CVSS 3.0MEDIUM 5.3
  • TI-2019-07558 Information disclosure in Eclipse Kura CVSS 3.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences