8.6

CVE-2026-4249: wso2 api_control_plane Improper Neutralization

CVSS: 8.6v3.1HighAnalyzed
Published 06-07-2026Last modified 06-07-2026
Open JSON

Vulnerability summary

CVE-2026-4249 is a high (CVSS 8.6) Improper Neutralization vulnerability in wso2 api_control_plane. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 45.3% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.56%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-07-2026
    PublishedVulnerability first disclosed.
  2. 06-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.56%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

0.00 pp

From 0.56% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.56%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Wso28 products
  • api_control_plane≥ 4.5.0, < 4.5.0.55 | ≥ 4.6.0, < 4.6.0.19
  • api_manager≥ 4.0.0, < 4.0.0.390 | ≥ 4.1.0, < 4.1.0.254 | ≥ 4.2.0, < 4.2.0.194 | ≥ 4.3.0, < 4.3.0.105 | ≥ 4.4.0, < 4.4.0.69 | ≥ 4.5.0, < 4.5.0.54 | ≥ 4.6.0, < 4.6.0.18
  • traffic_manager≥ 4.5.0, < 4.5.0.53 | ≥ 4.6.0, < 4.6.0.18
  • universal_gateway≥ 4.5.0, < 4.5.0.54 | ≥ 4.6.0, < 4.6.0.18
  • wso2 api control plane≥ 4.5.0, < 4.5.0.55 | ≥ 4.6.0, < 4.6.0.19 | ≥ 4.7.0, < 4.7.0.2

1 vendor · 8 products

References

1 links