Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-4249— Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption

Quick assessment

Affected
WSO2 WSO2 Universal Gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WSO2 universal gateway是美国WSO2公司开源的一款通用网关。 WSO2 universal gateway存在输入验证错误漏洞，该漏洞源于限流事件处理机制在接受用户提供的JSON有效载荷时未充分验证其结构和内容，导致未经身份验证的远程攻击者能够注入恶意JSON数据，造成持久拒绝服务。以下版本受到影响：WSO2 Universal Gateway 4.5.0.54之前版本、4.6.0.18之前版本和4.7.0.2之前版本；WSO2 Traffic Manager 4.5.0.53之前版

CVSS 8.6 · High EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 20

VendorProduct Version RangeStatus
WSO2 WSO2 API Control Plane 4.5.0< 4.5.0.55 affected
4.6.0< 4.6.0.19 affected
4.7.0< 4.7.0.2 affected
WSO2 WSO2 API Manager < 3.2.0 unknown
3.2.0< 3.2.0.470 affected
3.2.1< 3.2.1.89 affected
4.0.0< 4.0.0.390 affected
4.1.0< 4.1.0.254 affected
4.2.0< 4.2.0.194 affected
4.3.0< 4.3.0.105 affected
4.4.0< 4.4.0.69 affected
… +3 more rows
WSO2 WSO2 Traffic Manager 4.5.0< 4.5.0.53 affected
4.6.0< 4.6.0.18 affected
4.7.0< 4.7.0.2 affected
WSO2 WSO2 Universal Gateway 4.5.0< 4.5.0.54 affected
4.6.0< 4.6.0.18 affected
4.7.0< 4.7.0.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-4249

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption
Source: CVE Program / CVE List V5
Vulnerability Description
The throttling event handling mechanism in multiple WSO2 products accepts user-supplied JSON payloads without sufficient validation of their structure and content. This allows an unauthenticated remote attacker to inject malicious JSON data that can lead to a persistent denial of service condition. Successful exploitation of this vulnerability can disrupt the API Gateway, preventing legitimate API traffic from being processed and impacting complete service availability. The denial of service is persistent, requiring manual intervention to restore normal operations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对消息或数据结构的处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WSO2 universal gateway 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WSO2 universal gateway是美国WSO2公司开源的一款通用网关。 WSO2 universal gateway存在输入验证错误漏洞，该漏洞源于限流事件处理机制在接受用户提供的JSON有效载荷时未充分验证其结构和内容，导致未经身份验证的远程攻击者能够注入恶意JSON数据，造成持久拒绝服务。以下版本受到影响：WSO2 Universal Gateway 4.5.0.54之前版本、4.6.0.18之前版本和4.7.0.2之前版本；WSO2 Traffic Manager 4.5.0.53之前版
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WSO2 WSO2 Universal Gateway 4.5.0 ~ 4.5.0.54 -
WSO2 WSO2 Traffic Manager 4.5.0 ~ 4.5.0.53 -
WSO2 WSO2 API Control Plane 4.5.0 ~ 4.5.0.55 -
WSO2 WSO2 API Manager 3.2.0 ~ 3.2.0.470 -

II. Public POCs for CVE-2026-4249

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-4249

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-4249 (1)

IV. Related Vulnerabilities

Same product: WSO2 Universal Gateway
Same vendor: WSO2
Same weakness: CWE-707

V. Comments for CVE-2026-4249

No comments yet

Leave a comment