CVE-2021-20453

8.2 highEPSS 2.5%

High (8.2) in ibm websphere application server. EPSS 2.5% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 8.0, 8.5, and 9.0 is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 196648.

Severity

CVSS 3.1

8.2 high

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

EPSS: 2.5% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE: CWE-611
Published: 2021-04-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ibm:websphere_application_server

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/196648
https://www.ibm.com/support/pages/node/6445171
https://exchange.xforce.ibmcloud.com/vulnerabilities/196648
https://www.ibm.com/support/pages/node/6445171

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