CVE-2021-20454

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-21 · updated 2026-06-17
Weakness: CWE-611

Description

IBM WebSphere Application Server 7.0, 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: 196649.

Affected products

IBM WebSphere Application Server: from 7.0.0.0 through 7.0.0.45; from 8.0.0.0 through 8.0.0.15; from 8.5.0.0 through 8.5.5.19; from 9.0.0.0 through 9.0.5.7

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/196649
https://www.ibm.com/support/pages/node/6445481
https://exchange.xforce.ibmcloud.com/vulnerabilities/196649
https://www.ibm.com/support/pages/node/6445481

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