CVE-2026-9561 Vulnerability Analysis & Exploit Details

CVE-2026-9561
Vulnerability Scoring

8.2

/10

Severe Risk

Cybersecurity professionals consider CVE-2026-9561 an immediate threat requiring urgent mitigation.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2026-9561 Details

Status: Analyzed

Last updated: 🕠 18 Aug 2026, 17:54 UTC
Originally published on: 🕘 14 Jul 2026, 09:16 UTC

Time between publication and last update: 35 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

CVE-2026-9561 Vulnerability Summary

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.

Assessing the Risk of CVE-2026-9561

Access Complexity Graph

The exploitability of CVE-2026-9561 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-9561

With low attack complexity and no required privileges, CVE-2026-9561 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-9561, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-9561, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2026-9561 has no significant impact on data confidentiality.
Integrity: High
CVE-2026-9561 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: Low
CVE-2026-9561 may slightly degrade system performance without fully affecting service availability.

CVE-2026-9561 References

External References

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

CWE Common Weakness Enumeration

CWE-807

Vulnerable Configurations

cpe:2.3:a:eclipse:kura:5.0.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:m1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:m1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc10:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc10:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc11:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc11:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc6:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc6:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc7:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc7:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc8:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc8:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc9:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.0:rc9:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.0.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.2:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.2:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.2:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.2:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.2:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.1.2:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.1:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.2:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.2:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.2:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.2:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.2:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.2.2:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.3.1:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.2:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.2:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.2:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.4.2:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.5.0:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:-:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc1:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc2:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc3:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc4:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc5:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc6:*:*:*:*:*:*
cpe:2.3:a:eclipse:kura:5.6.1:rc6:*:*:*:*:*:*

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