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Fencer Vulns
medium 4.9

CVE-2024-9517 json

Improper Token Renewal in Refresh Token Grant in Multiple WSO2 Products Allows Unauthorized Access to Blocked Accounts

published 2026-11-02 6 d ago modified 2026-11-09 2 min ago also EUVD-2024-55837

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 7%
public exploits
0
none known

Summary

The refresh token grant type in WSO2 products fails to re-validate account status before issuing new access tokens. This weakness allows an attacker to obtain valid access tokens for user accounts even after they have been blocked by the user store, bypassing account lockout mechanisms.

This vulnerability can lead to unauthorized access to user accounts and their associated resources. Attackers can leverage this to perform actions on behalf of blocked users, potentially leading to privilege escalation or data exfiltration depending on the permissions of the compromised account.

Patch / fix

  • WSO2 WSO2 API Manager 3.1.0.308, 3.2.0.429, 3.2.1.49, 4.0.0.315, 4.1.0.214, 4.2.0.149, 4.3.0.62, 4.4.0.25, 4.5.0.9
  • WSO2 WSO2 Universal Gateway 4.5.0.9
  • WSO2 WSO2 Traffic Manager 4.5.0.9
  • WSO2 WSO2 API Control Plane 4.5.0.10
  • WSO2 WSO2 Identity Server as Key Manager 5.10.0.324
  • WSO2 WSO2 Identity Server 5.10.0.331, 5.11.0.376, 6.0.0.219, 6.1.0.205, 7.0.0.73
  • WSO2 WSO2 Open Banking AM 2.0.0.357
  • WSO2 WSO2 Open Banking IAM 2.0.0.377
  • WSO2 WSO2 Carbon OAuth 6.4.2.148, 6.4.111.122, 6.4.176.26, 6.4.180.10, 6.8.0.44, 6.9.6.21, 6.11.21.64, 6.13.16.13, 6.13.19.7, 6.13.27.1, 7.0.26.37

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
6 d ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% 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 Universal Gateway
  • WSO2 WSO2 Traffic Manager
  • WSO2 WSO2 API Control Plane
  • WSO2 WSO2 Identity Server as Key Manager
  • WSO2 WSO2 Identity Server
  • WSO2 WSO2 Open Banking AM
  • WSO2 WSO2 Open Banking IAM
  • 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.