Description
The WSO2 Identity Server fails to enforce a default expiry time for SMS One-Time Passwords (OTPs) used in multi-factor authentication (MFA). This allows unused OTPs to remain valid indefinitely, presenting an opportunity for malicious actors to conduct brute force attacks by repeatedly guessing the OTP.

The absence of automatic expiration for OTPs grants attackers an unlimited timeframe to attempt guessing the correct code. A successful brute force attack can lead to an MFA bypass, resulting in the unauthorized takeover of a user's account and compromising the security and privacy of both the individual and the system.
Published: 2026-10-08
Score: 5.9 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

Vendor Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3149/#solution

Tracking

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Advisories

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History

Thu, 08 Oct 2026 01:15:00 +0000

Type Values Removed Values Added
Description The WSO2 Identity Server fails to enforce a default expiry time for SMS One-Time Passwords (OTPs) used in multi-factor authentication (MFA). This allows unused OTPs to remain valid indefinitely, presenting an opportunity for malicious actors to conduct brute force attacks by repeatedly guessing the OTP. The absence of automatic expiration for OTPs grants attackers an unlimited timeframe to attempt guessing the correct code. A successful brute force attack can lead to an MFA bypass, resulting in the unauthorized takeover of a user's account and compromising the security and privacy of both the individual and the system.
Title Potential brute force vulnerability due to non-expiring SMS OTPs
First Time appeared Wso2
Wso2 wso2 Identity Server
Weaknesses CWE-613
CPEs cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
Vendors & Products Wso2
Wso2 wso2 Identity Server
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Subscriptions

Wso2 Wso2 Identity Server
cve-icon MITRE

Status: PUBLISHED

Assigner: WSO2

Published:

Updated: 2026-10-08T00:09:52.353Z

Reserved: 2024-08-23T14:52:53.493Z

Link: CVE-2024-8122

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-08T01:16:32.037

Modified: 2026-10-08T01:16:32.183

Link: CVE-2024-8122

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-08T02:30:06Z

Weaknesses
  • CWE-613

    Insufficient Session Expiration