CVE-2026-4052: This issue only impacts deployments where WSO2 Identity Server is configured as a Resident Key Manager
Source GCVE Database
Not known to be exploited · CVSS 9.8 Critical : upgrade to 1.8.8 as a priority.
Data as of 3 Nov 2026, 10:43 UTC
Thin evidence
One scorer or none| CNA (WSO2) | CVSS 3.1 | 9.8 |
|---|
- Patch
- Available – fixed in 1.8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade WSO2 Identity Server Key Manager Connector (apim-km-wso2is) and org.wso2/carbon-apimgt to 1.8.8.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| WSO2WSO2 API Manager | Affected
| Fixed in– |
| WSO2WSO2 API Control Plane | Affected
| Fixed in– |
| WSO2 Identity Server Key Manager Connector (apim-km-wso2is)org.wso2.km.ext.wso2is:wso2is.key.manager.core | Affected
| Fixed in
|
Mavenorg.wso2/carbon-apimgtpkg:maven/org.wso2/carbon-apimgtOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, organizations should review their deployment configurations, especially the use of WSO2 Identity Server as a Resident Key Manager with database sharing, and consider restricting self-registration or access to token endpoints as a temporary mitigation.
Description
CVE-2026-4052 affects deployments where WSO2 Identity Server is configured as a Resident Key Manager with database sharing. In these environments, a self-registered user can obtain a token from the WSO2 Identity Server token endpoint and use it to access the System REST APIs of WSO2 API Manager. This vulnerability has a critical severity with a CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability.