How severe is CVE-2026-9561?

CVE-2026-9561 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-9561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9561?

CVE-2026-9561 affects Eclipse Kura. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-9561?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-9561 published?

CVE-2026-9561 was published on 2026-07-14 and last updated on 2026-08-18.

CVE-2026-9561

CVE-2026-9561 is a high-severity vulnerability in Eclipse Kura with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v4: 8.8
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Eclipse Kura
Published: 2026-07-14
Last modified: 2026-08-18

Description

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.

Frequently asked questions

What is CVE-2026-9561?: 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.
How severe is CVE-2026-9561?: CVE-2026-9561 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-9561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9561?: CVE-2026-9561 affects Eclipse Kura. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-9561?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-9561 published?: CVE-2026-9561 was published on 2026-07-14 and last updated on 2026-08-18.

References

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/117

Affected products (1)

cpe:2.3:a:eclipse:kura:*:*:*:*:*:*:*:*

More vulnerabilities in Eclipse Kura

CVE-2017-7649 — Critical (CVSS 9.8): The network enabled distribution of Kura before 2.1.0 takes control over the device's firewall setup but does not allow…
CVE-2024-3046 — High (CVSS 7.5): In Eclipse Kura LogServlet component included in versions 5.0.0 to 5.4.1, a specifically crafted request to the servlet…
CVE-2019-10244 — High (CVSS 7.5): In Eclipse Kura versions up to 4.0.0, the Web UI package and component services, the Artemis simple Mqtt component and…
CVE-2019-10243 — Medium (CVSS 5.3): In Eclipse Kura versions up to 4.0.0, Kura exposes the underlying Ui Web server version in its replies. This can be…
CVE-2019-10242 — Medium (CVSS 5.3): In Eclipse Kura versions up to 4.0.0, the SkinServlet did not checked the path passed during servlet call, potentially…

All CVEs affecting Eclipse Kura →

Other CWE-345 (Insufficient Verification of Data Authenticity) vulnerabilities

CVE-2026-35051 — Critical (CVSS 10.0): Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is an…
CVE-2014-8165 — Critical (CVSS 10.0): scripts/amsvis/powerpcAMS/amsnet.py in powerpc-utils-python uses the pickle Python module unsafely, which allows remote…
CVE-2026-50195 — Critical (CVSS 9.9): containerd is an open-source container runtime. Versions prior to 2.3.2, 2.2.5 and 2.1.9 contain a vulnerability in the…
CVE-2022-36130 — Critical (CVSS 9.9): HashiCorp Boundary up to 0.10.1 did not properly perform data integrity checks to ensure the resources were associated…
CVE-2026-74875 — Critical (CVSS 9.8): openssl_encrypt versions before 1.4.0 silently skip JSON schema validation when the jsonschema library is not…
CVE-2026-28185 — Critical (CVSS 9.8): Unauthenticated Broken Authentication in Log in with Google <= 1.4.2 versions.

Browse all CWE-345 (Insufficient Verification of Data Authenticity) vulnerabilities →