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CVE-2026-4249

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0705c544a9e36094f7f50f4e90014c61b5c70817dededd3cf00563d9d33320f6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"defaultStatus":"unaffected","product":"WSO2 Traffic Manager","vendor":"WSO2","versions":[{"lessThan":"4.5.0.53","status":"affected","version":"4.5.0","versionType":"custom"},{"lessThan":"4.6.0.18","status":"affected","version":"4.6.0","versionType":"custom"},{"lessThan":"4.7.0.2","status":"affected","version":"4.7.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"WSO2 API Control Plane","vendor":"WSO2","versions":[{"lessThan":"4.5.0.55","status":"affected","version":"4.5.0","versionType":"custom"},{"lessThan":"4.6.0.19","status":"affected","version":"4.6.0","versionType":"custom"},{"lessThan":"4.7.0.2","status":"affected","version":"4.7.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/2

{"defaultStatus":"unaffected","product":"WSO2 API Manager","vendor":"WSO2","versions":[{"lessThan":"3.2.0","status":"unknown","version":"0","versionType":"custom"},{"lessThan":"3.2.0.470","status":"affected","version":"3.2.0","versionType":"custom"},{"lessThan":"3.2.1.89","status":"affected","version":"3.2.1","versionType":"custom"},{"lessThan":"4.0.0.390","status":"affected","version":"4.0.0","versionType":"custom"},{"lessThan":"4.1.0.254","status":"affected","version":"4.1.0","versionType":"custom"},{"lessThan":"4.2.0.194","status":"affected","version":"4.2.0","versionType":"custom"},{"lessT…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/3

{"defaultStatus":"unaffected","product":"WSO2 Universal Gateway","vendor":"WSO2","versions":[{"lessThan":"4.5.0.54","status":"affected","version":"4.5.0","versionType":"custom"},{"lessThan":"4.6.0.18","status":"affected","version":"4.6.0","versionType":"custom"},{"lessThan":"4.7.0.2","status":"affected","version":"4.7.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/0

Affected products and versions

4 source assertions
{"defaultStatus":"unaffected","product":"WSO2 Traffic Manager","vendor":"WSO2","versions":[{"lessThan":"4.5.0.53","status":"affected","version":"4.5.0","versionType":"custom"},{"lessThan":"4.6.0.18","status":"affected","version":"4.6.0","versionType":"custom"},{"lessThan":"4.7.0.2","status":"affected","version":"4.7.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"WSO2 API Control Plane","vendor":"WSO2","versions":[{"lessThan":"4.5.0.55","status":"affected","version":"4.5.0","versionType":"custom"},{"lessThan":"4.6.0.19","status":"affected","version":"4.6.0","versionType":"custom"},{"lessThan":"4.7.0.2","status":"affected","version":"4.7.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/2
{"defaultStatus":"unaffected","product":"WSO2 API Manager","vendor":"WSO2","versions":[{"lessThan":"3.2.0","status":"unknown","version":"0","versionType":"custom"},{"lessThan":"3.2.0.470","status":"affected","version":"3.2.0","versionType":"custom"},{"lessThan":"3.2.1.89","status":"affected","version":"3.2.1","versionType":"custom"},{"lessThan":"4.0.0.390","status":"affected","version":"4.0.0","versionType":"custom"},{"lessThan":"4.1.0.254","status":"affected","version":"4.1.0","versionType":"custom"},{"lessThan":"4.2.0.194","status":"affected","version":"4.2.0","versionType":"custom"},{"lessT…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/3
{"defaultStatus":"unaffected","product":"WSO2 Universal Gateway","vendor":"WSO2","versions":[{"lessThan":"4.5.0.54","status":"affected","version":"4.5.0","versionType":"custom"},{"lessThan":"4.6.0.18","status":"affected","version":"4.6.0","versionType":"custom"},{"lessThan":"4.7.0.2","status":"affected","version":"4.7.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-707","description":"CWE-707: Use of Out-of-Scope Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"tags":["vendor-advisory"],"url":"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a821556886e87bd35d77f4d77ee747be96acf016d013dd3616fa73d7e1dbfaf3 · sha256:5b6b97cccb461476… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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