Vulnerability-Lookup

CVE-2026-4249 (GCVE-0-2026-4249)

Vulnerability from cvelistv5 – Published: 2026-07-06 10:16 – Updated: 2026-07-06 11:03

Title

Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption

Summary

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.

Severity

8.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-06 11:03 UTC

CWE

CWE-707 - Use of Out-of-Scope Validation

Assigner

WSO2 CNA under the mitre root

CNA scorecard B 89/100 over 40 records in the last 180 days details

References

1 reference

URL	Tags
https://security.docs.wso2.com/en/latest/security…	vendor-advisory

Impacted products

4 products

Vendor	Product	Version
WSO2	WSO2 Universal Gateway	Affected: 4.5.0 , < 4.5.0.54 (custom) Affected: 4.6.0 , < 4.6.0.18 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) cpe:2.3:a:wso2:wso2_universal_gateway:::::::: cpe:2.3:a:wso2:wso2_universal_gateway:::::::: cpe:2.3:a:wso2:wso2_universal_gateway::::::::
WSO2	WSO2 Traffic Manager	Affected: 4.5.0 , < 4.5.0.53 (custom) Affected: 4.6.0 , < 4.6.0.18 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) cpe:2.3:a:wso2:wso2_traffic_manager:::::::: cpe:2.3:a:wso2:wso2_traffic_manager:::::::: cpe:2.3:a:wso2:wso2_traffic_manager::::::::
WSO2	WSO2 API Control Plane	Affected: 4.5.0 , < 4.5.0.55 (custom) Affected: 4.6.0 , < 4.6.0.19 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) cpe:2.3:a:wso2:wso2_api_control_plane:::::::: cpe:2.3:a:wso2:wso2_api_control_plane:::::::: cpe:2.3:a:wso2:wso2_api_control_plane::::::::
WSO2	WSO2 API Manager	Unknown: 0 , < 3.2.0 (custom) Affected: 3.2.0 , < 3.2.0.470 (custom) Affected: 3.2.1 , < 3.2.1.89 (custom) Affected: 4.0.0 , < 4.0.0.390 (custom) Affected: 4.1.0 , < 4.1.0.254 (custom) Affected: 4.2.0 , < 4.2.0.194 (custom) Affected: 4.3.0 , < 4.3.0.105 (custom) Affected: 4.4.0 , < 4.4.0.69 (custom) Affected: 4.5.0 , < 4.5.0.54 (custom) Affected: 4.6.0 , < 4.6.0.18 (custom) Affected: 4.7.0 , < 4.7.0.2 (custom) cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager:::::::: cpe:2.3:a:wso2:wso2_api_manager::::::::

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FKIE_CVE-2026-4249

Vulnerability from fkie_nvd - Published: 2026-07-06 11:16 - Updated: 2026-07-09 13:04

Severity

8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Summary

References

	URL	Tags
	ed10eef1-636d-4fbe-9993-6890dfa878f8	https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/	Vendor Advisory

Impacted products

Vendor	Product	Version
wso2	api_control_plane	*
wso2	api_control_plane	*
wso2	api_manager	*
wso2	api_manager	*
wso2	api_manager	*
wso2	api_manager	*
wso2	api_manager	*
wso2	api_manager	*
wso2	api_manager	*
wso2	traffic_manager	*
wso2	traffic_manager	*
wso2	universal_gateway	*
wso2	universal_gateway	*

JSON

To clipboard

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GHSA-7469-8H9R-C5XC

Vulnerability from github – Published: 2026-07-06 12:31 – Updated: 2026-07-06 12:31

Details

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.

Severity

8.6 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-4249"
  ],
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    "github_reviewed": false,
    "github_reviewed_at": null,
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    "severity": "HIGH"
  },
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  "id": "GHSA-7469-8h9r-c5xc",
  "modified": "2026-07-06T12:31:30Z",
  "published": "2026-07-06T12:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4249"
    },
    {
      "type": "WEB",
      "url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236"
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      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2026-2085

Vulnerability from csaf_certbund - Published: 2026-06-25 22:00 - Updated: 2026-08-06 22:00

Summary

WSO2 API Manager: Mehrere Schwachstellen

Severity

Hoch

Scope

13 vulnerabilities in this advisory, including CVE-2026-4249.

CVE-2026-4249

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-4249 (GCVE-0-2026-4249)

FKIE_CVE-2026-4249

GHSA-7469-8H9R-C5XC

WID-SEC-W-2026-2085

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