Vulnerability · Published Oct 28, 2026 · Assigned by WSO2
CVE-2026-3583Improper Token Revocation via OAuth2 Scope Enforcement in Multiple WSO2 Products [Disrupted Authentication Flows]
Low 3.1
In plain English
A low-severity security flaw in WSO2 API Control Plane from WSO2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Official description
When the `allowed_scopes` configuration is enabled, the OAuth2 token introspection mechanism does not immediately invalidate a token in the cache after a revocation request. This results in a scenario where an access token that was introspected immediately before a revocation request may be returned again to the client after revocation, until the relevant cache entry is cleared. The security consequence is that a revoked access token may be re-issued to the client during the cache lifetime. While the re-issued token is not treated as valid for API authorization, affected users may be unable to obtain a new valid access token until the cache is cleared, which can disrupt authentication flows.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WSO2 | WSO2 API Manager | 3.1.0 – before 3.1.0.3673.2.0 – before 3.2.0.4753.2.1 – before 3.2.1.1064.0.0 – before 4.0.0.3944.1.0 – before 4.1.0.2674.2.0 – before 4.2.0.2074.3.0 – before 4.3.0.120 |
| WSO2 | WSO2 Traffic Manager | 4.5.0 – before 4.5.0.654.6.0 – before 4.6.0.294.7.0 – before 4.7.0.3 |
| WSO2 | WSO2 Universal Gateway | 4.5.0 – before 4.5.0.674.6.0 – before 4.6.0.294.7.0 – before 4.7.0.3 |
| WSO2 | WSO2 API Control Plane | 4.5.0 – before 4.5.0.684.6.0 – before 4.6.0.304.7.0 – before 4.7.0.3 |
| WSO2 | WSO2 Identity Server | 5.10.0 – before 5.10.0.3975.11.0 – before 5.11.0.4446.0.0 – before 6.0.0.2706.1.0 – before 6.1.0.2697.0.0 – before 7.0.0.1527.1.0 – before 7.1.0.617.2.0 – before 7.2.0.20 |
| WSO2 | WSO2 Open Banking IAM | 2.0.0 – before 2.0.0.434 |
| WSO2 | WSO2 Identity Server as Key Manager | 5.10.0 – before 5.10.0.387 |
| WSO2 | WSO2 Open Banking AM | 2.0.0 – before 2.0.0.414 |
| WSO2 | WSO2 Carbon OAuth | 6.4.2 – before 6.4.2.1786.4.111 – before 6.4.111.1746.4.176 – before 6.4.176.386.4.180 – before 6.4.180.256.8.0 – before 6.8.0.596.9.6 – before 6.9.6.366.11.21 – before 6.11.21.1186.13.16 – before 6.13.16.32 |
Weakness: CWE-613 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L