IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is vulnerable to a privilege escalation when using Liberty collectives. (CVE-2026-18499)
IBM WebSphere Application Server Liberty versions 17.0.0.3 through 26.0.0.8 contain a vulnerability that allows privilege escalation when using Liberty collectives. This vulnerability is identified as CVE-2026-18499 and has a high severity rating with a CVSS score of 8.1. The flaw relates to improper access control (CWE-285), potentially enabling an attacker with limited privileges to gain higher privileges. No specific patch or remediation information is provided in the available data.
AI Analysis
Technical Summary
CVE-2026-18499 affects IBM WebSphere Application Server Liberty editions from version 17.0.0.3 up to and including 26.0.0.8. The vulnerability involves a privilege escalation issue when using Liberty collectives, categorized under CWE-285 (Improper Authorization). The CVSS 3.1 base score is 8.1, indicating high severity, with network attack vector, low attack complexity, requiring low privileges, no user interaction, and impacting confidentiality and integrity but not availability. No known exploits in the wild have been reported. There is no vendor advisory or patch information provided in the input data.
Potential Impact
An attacker with some level of privileges on the affected IBM WebSphere Liberty server could exploit this vulnerability to escalate their privileges, potentially gaining unauthorized access to sensitive information or control over the system. The impact affects confidentiality and integrity but does not affect availability. This could lead to unauthorized actions or data exposure within the affected environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users should monitor IBM's security advisories for updates and consider restricting access to Liberty collectives features until a fix is available.
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is vulnerable to a privilege escalation when using Liberty collectives. (CVE-2026-18499)
Description
IBM WebSphere Application Server Liberty versions 17.0.0.3 through 26.0.0.8 contain a vulnerability that allows privilege escalation when using Liberty collectives. This vulnerability is identified as CVE-2026-18499 and has a high severity rating with a CVSS score of 8.1. The flaw relates to improper access control (CWE-285), potentially enabling an attacker with limited privileges to gain higher privileges. No specific patch or remediation information is provided in the available data.
CVSS v3.1
Score 8.1high
Affected software
pkg:maven/com.ibm.websphere/libertyRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18499 affects IBM WebSphere Application Server Liberty editions from version 17.0.0.3 up to and including 26.0.0.8. The vulnerability involves a privilege escalation issue when using Liberty collectives, categorized under CWE-285 (Improper Authorization). The CVSS 3.1 base score is 8.1, indicating high severity, with network attack vector, low attack complexity, requiring low privileges, no user interaction, and impacting confidentiality and integrity but not availability. No known exploits in the wild have been reported. There is no vendor advisory or patch information provided in the input data.
Potential Impact
An attacker with some level of privileges on the affected IBM WebSphere Liberty server could exploit this vulnerability to escalate their privileges, potentially gaining unauthorized access to sensitive information or control over the system. The impact affects confidentiality and integrity but does not affect availability. This could lead to unauthorized actions or data exposure within the affected environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or workaround information is provided, users should monitor IBM's security advisories for updates and consider restricting access to Liberty collectives features until a fix is available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fg2c-rf98-x93f
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-18499"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a7cd3e9bf8831d539180465
Added to database: 08/12/2026, 20:13:29 UTC
Last enriched: 08/12/2026, 20:27:19 UTC
Last updated: 08/13/2026, 02:41:00 UTC
Views: 3
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