01 Record
CVE-2026-4249
Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption
HighPUBLISHEDCNA: WSO2
CNA base score8.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
02 Description
Denial of Service via Malicious JSON Payloads in Throttling Events in Multiple WSO2 Products Causing Persistent Service Disruption
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.55% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 46.1% of scored records. A rank, not a probability.
- NVD base score
- 8.6 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-07-09.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-07-06 10:16Z3 MO AGO
- Last updated
- 2026-07-06 11:03Z3 MO AGO
- Reserved
- 2026-03-16
- Assigning CNA
- WSO2
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.6)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Weaknesses
- CWE-707Improper NeutralizationPillar
- Data version
- 5.2
- Document digest
- 5b6b97cccb46147647f16bdd619fba8cc2ba7c00aa58afb5b3dfa5849ba966e7
05 Affected products
VendorProductVersionsPlatforms
WSO2WSO2 API Manager3.2.0 to < 3.2.0.470, 3.2.1 to < 3.2.1.89, 4.0.0 to < 4.0.0.390, 4.1.0 to < 4.1.0.254, 4.2.0 to < 4.2.0.194, 4.3.0 to < 4.3.0.105, 4.4.0 to < 4.4.0.69, 4.5.0 to < 4.5.0.54, 4.6.0 to < 4.6.0.18, 4.7.0 to < 4.7.0.2—
06 References
07 Remediation
Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5236/#solution