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Fencer Vulns
medium 4.9

CVE-2024-8995 json

Authorization Code issued for Deleted User reuse in Multiple WSO2 Products Allows Unauthorized Access

published 2026-08-06 3 mo ago modified 2026-10-27 12 d ago also EUVD-2024-55706

cvss
4.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

Unused authorization codes issued to deleted users are not being properly invalidated or removed from the system. This allows for the persistence of these codes, enabling them to be potentially reused.

If an attacker possesses both the authorization code and the associated client credentials (client ID and client secret), they can leverage these unused codes to obtain access tokens on behalf of users who have already been deleted. This may lead to unauthorized access to sensitive resources and services, contingent on the scopes originally authorized for the compromised authorization code.

Patch / fix

  • WSO2 WSO2 API Manager 3.1.0.320, 3.2.0.413, 3.2.1.90, 4.0.0.334, 4.1.0.255, 4.2.0.195, 4.3.0.106, 4.4.0.70, 4.5.0.55, 4.6.0.19
  • WSO2 WSO2 Traffic Manager 4.5.0.54, 4.6.0.19
  • WSO2 WSO2 API Control Plane 4.5.0.56, 4.6.0.20
  • WSO2 WSO2 Universal Gateway 4.5.0.55, 4.6.0.19
  • WSO2 WSO2 Open Banking AM 2.0.0.369
  • WSO2 WSO2 Identity Server 5.10.0.345, 5.11.0.395, 6.0.0.229, 6.1.0.208
  • WSO2 WSO2 Open Banking IAM 2.0.0.389
  • WSO2 WSO2 Identity Server as Key Manager 5.10.0.338
  • WSO2 WSO2 Carbon OAuth 6.4.2.154, 6.4.111.131, 6.4.176.35, 6.4.180.17, 6.8.0.46, 6.9.6.34, 6.11.21.59, 6.11.53, 6.13.16.27, 6.13.19.19, 6.13.27.15, 6.13.41.4

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Affected products

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