XXE in IBM Websphere Application Server
CVE-2021-20453
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.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.
EPSS exploit prediction
EPSS: 0.025 (83.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.025 · change: -0.001
Affected products
- IBM Websphere Application Server — versions 8.0, 8.5, 9.0
- IBM Websphere Application Server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ibm.com/support/pages/node/6445171 (Patch, Vendor Advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/196648 (VDB Entry, vdb-entry, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-20453?
- CVE-2021-20453 is a high-severity vulnerability in IBM Websphere Application Server, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.2/10. Published 2021-04-20.
- How severe is CVE-2021-20453?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2021-20453 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.