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Fencer Vulns
low 3.1

CVE-2026-3583 json

Improper Token Revocation via OAuth2 Scope Enforcement in Multiple WSO2 Products [Disrupted Authentication Flows]

published 2026-10-28 11 d ago modified 2026-10-29 10 d ago also EUVD-2026-112400

cvss
3.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits
0
none known

Summary

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.

Patch / fix

  • WSO2 WSO2 API Manager 3.1.0.367, 3.2.0.475, 3.2.1.106, 4.0.0.394, 4.1.0.267, 4.2.0.207, 4.3.0.120, 4.4.0.83, 4.5.0.67, 4.6.0.29, 4.7.0.3
  • WSO2 WSO2 Traffic Manager 4.5.0.65, 4.6.0.29, 4.7.0.3
  • WSO2 WSO2 Universal Gateway 4.5.0.67, 4.6.0.29, 4.7.0.3
  • WSO2 WSO2 API Control Plane 4.5.0.68, 4.6.0.30, 4.7.0.3
  • WSO2 WSO2 Identity Server 5.10.0.397, 5.11.0.444, 6.0.0.270, 6.1.0.269, 7.0.0.152, 7.1.0.61, 7.2.0.20, 7.3.0.1
  • WSO2 WSO2 Open Banking IAM 2.0.0.434
  • WSO2 WSO2 Identity Server as Key Manager 5.10.0.387
  • WSO2 WSO2 Open Banking AM 2.0.0.414
  • WSO2 WSO2 Carbon OAuth 6.4.2.178, 6.4.111.174, 6.4.176.38, 6.4.180.25, 6.8.0.59, 6.9.6.36, 6.11.21.118, 6.13.16.32, 6.13.19.23, 6.13.27.21, 6.13.41.9, 6.14.14.3, 7.0.26.103, 7.0.259.54, 7.0.385.15, 7.4.99.5, 7.5.78

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
11 d ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected products

  • WSO2 WSO2 API Manager
  • WSO2 WSO2 Traffic Manager
  • WSO2 WSO2 Universal Gateway
  • WSO2 WSO2 API Control Plane
  • WSO2 WSO2 Identity Server
  • WSO2 WSO2 Open Banking IAM
  • WSO2 WSO2 Identity Server as Key Manager
  • WSO2 WSO2 Open Banking AM
  • WSO2 WSO2 Carbon OAuth

Classification

Weakness
  • CWE-613 DEPRECATED: Insufficient Session Expiration

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.