# CVE-2024-9517: Improper Token Renewal in Refresh Token Grant in Multiple WSO2 Products Allows Unauthorized Access to Blocked Accounts

Status: published. Published: 2026-11-02. Updated: 2026-11-02.

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.

## Remediation

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

## Affected products and versions

- WSO2 / WSO2 API Manager: ≥ 0; < 3.1.0 (unknown, custom); ≥ 3.1.0; < 3.1.0.308 (affected, custom); ≥ 3.2.0; < 3.2.0.429 (affected, custom); ≥ 3.2.1; < 3.2.1.49 (affected, custom); ≥ 4.0.0; < 4.0.0.315 (affected, custom); ≥ 4.1.0; < 4.1.0.214 (affected, custom); ≥ 4.2.0; < 4.2.0.149 (affected, custom); ≥ 4.3.0; < 4.3.0.62 (affected, custom); ≥ 4.4.0; < 4.4.0.25 (affected, custom); ≥ 4.5.0; < 4.5.0.9 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Universal Gateway: ≥ 4.5.0; < 4.5.0.9 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Traffic Manager: ≥ 4.5.0; < 4.5.0.9 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 API Control Plane: ≥ 4.5.0; < 4.5.0.10 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Identity Server as Key Manager: ≥ 0; < 5.10.0 (unknown, custom); ≥ 5.10.0; < 5.10.0.324 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Identity Server: ≥ 0; < 5.10.0 (unknown, custom); ≥ 5.10.0; < 5.10.0.331 (affected, custom); ≥ 5.11.0; < 5.11.0.376 (affected, custom); ≥ 6.0.0; < 6.0.0.219 (affected, custom); ≥ 6.1.0; < 6.1.0.205 (affected, custom); ≥ 7.0.0; < 7.0.0.73 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Open Banking AM: ≥ 0; < 2.0.0 (unknown, custom); ≥ 2.0.0; < 2.0.0.357 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Open Banking IAM: ≥ 0; < 2.0.0 (unknown, custom); ≥ 2.0.0; < 2.0.0.377 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Carbon OAuth (org.wso2.carbon.identity.inbound.auth.oauth2:org.wso2.carbon.identity.oauth): ≥ 6.4.2; < 6.4.2.148 (affected, custom); ≥ 6.4.111; < 6.4.111.122 (affected, custom); ≥ 6.4.176; < 6.4.176.26 (affected, custom); ≥ 6.4.180; < 6.4.180.10 (affected, custom); ≥ 6.8.0; < 6.8.0.44 (affected, custom); ≥ 6.9.6; < 6.9.6.21 (affected, custom); ≥ 6.11.21; < 6.11.21.64 (affected, custom); ≥ 6.13.16; < 6.13.16.13 (affected, custom); ≥ 6.13.19; < 6.13.19.7 (affected, custom); ≥ 6.13.27; < 6.13.27.1 (affected, custom); ≥ 7.0.26; < 7.0.26.37 (affected, custom). Source: CNA: WSO2

## Severity and prioritization

- CVSS 3.1: 4.9 (medium); CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N; source: CNA: WSO2

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-613

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3676/ (CNA: WSO2; vendor-advisory)

## Provenance

- CNA: WSO2: https://www.cve.org/CVERecord?id=CVE-2024-9517; retrieved 2026-11-02; source updated 2026-11-02

Revision: 9e68b3f0bc9522cc09f37aaa41e56b98584abb673bb6d1766add14e9f41d296e

Canonical: https://y2.dev/cve/CVE-2024-9517