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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
WSO2 WSO2 API Manager unaffected
Version Status Constraints
0 unknown < 3.1.0
3.1.0 affected < 3.1.0.308
3.2.0 affected < 3.2.0.429
3.2.1 affected < 3.2.1.49
4.0.0 affected < 4.0.0.315
4.1.0 affected < 4.1.0.214
4.2.0 affected < 4.2.0.149
4.3.0 affected < 4.3.0.62
4.4.0 affected < 4.4.0.25
4.5.0 affected < 4.5.0.9
WSO2 WSO2 Universal Gateway unaffected
Version Status Constraints
4.5.0 affected < 4.5.0.9
WSO2 WSO2 Traffic Manager unaffected
Version Status Constraints
4.5.0 affected < 4.5.0.9
WSO2 WSO2 API Control Plane unaffected
Version Status Constraints
4.5.0 affected < 4.5.0.10
WSO2 WSO2 Identity Server as Key Manager unaffected
Version Status Constraints
0 unknown < 5.10.0
5.10.0 affected < 5.10.0.324
WSO2 WSO2 Identity Server unaffected
Version Status Constraints
0 unknown < 5.10.0
5.10.0 affected < 5.10.0.331
5.11.0 affected < 5.11.0.376
6.0.0 affected < 6.0.0.219
6.1.0 affected < 6.1.0.205
7.0.0 affected < 7.0.0.73
WSO2 WSO2 Open Banking AM unaffected
Version Status Constraints
0 unknown < 2.0.0
2.0.0 affected < 2.0.0.357
WSO2 WSO2 Open Banking IAM unaffected
Version Status Constraints
0 unknown < 2.0.0
2.0.0 affected < 2.0.0.377
WSO2 WSO2 Carbon OAuth unknown
Version Status Constraints
6.4.2 affected < 6.4.2.148
6.4.111 affected < 6.4.111.122
6.4.176 affected < 6.4.176.26
6.4.180 affected < 6.4.180.10
6.8.0 affected < 6.8.0.44
6.9.6 affected < 6.9.6.21
6.11.21 affected < 6.11.21.64
6.13.16 affected < 6.13.16.13
6.13.19 affected < 6.13.19.7
6.13.27 affected < 6.13.27.1
7.0.26 affected < 7.0.26.37

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Wso2 Subscribe
Wso2 Api Control Plane Subscribe
Wso2 Api Manager Subscribe
Wso2 Carbon Oauth Subscribe
Wso2 Identity Server Subscribe
Wso2 Identity Server As Key Manager Subscribe
Wso2 Open Banking Am Subscribe
Wso2 Open Banking Iam Subscribe
Wso2 Traffic Manager Subscribe
Wso2 Universal Gateway Subscribe
Advisories

No advisories yet.

Fixes

Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3676/#solution

Workaround

No workaround given by the vendor.

References
Link Providers
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3676/ cve-icon
History

Mon, 02 Nov 2026 11:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Improper Token Renewal in Refresh Token Grant in Multiple WSO2 Products Allows Unauthorized Access to Blocked Accounts
First Time appeared Wso2
Wso2 wso2 Api Control Plane
Wso2 wso2 Api Manager
Wso2 wso2 Carbon Oauth
Wso2 wso2 Identity Server
Wso2 wso2 Identity Server As Key Manager
Wso2 wso2 Open Banking Am
Wso2 wso2 Open Banking Iam
Wso2 wso2 Traffic Manager
Wso2 wso2 Universal Gateway
Weaknesses CWE-613
CPEs cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carbon_oauth:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server_as_key_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_open_banking_am:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_open_banking_iam:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_traffic_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_universal_gateway:*:*:*:*:*:*:*:*
Vendors & Products Wso2
Wso2 wso2 Api Control Plane
Wso2 wso2 Api Manager
Wso2 wso2 Carbon Oauth
Wso2 wso2 Identity Server
Wso2 wso2 Identity Server As Key Manager
Wso2 wso2 Open Banking Am
Wso2 wso2 Open Banking Iam
Wso2 wso2 Traffic Manager
Wso2 wso2 Universal Gateway
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WSO2

Published:

Updated: 2026-11-02T11:30:15.562Z

Reserved: 2024-10-04T07:58:59.333Z

Link: CVE-2024-9517

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses