XML external entity injection in Elastic App Search
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-611 and the CVSS impact.
Summary
Elastic App Search versions after 7.11.0 and before 7.12.0 contain an XML External Entity Injection issue (XXE) in the App Search web crawler beta feature. Using this vector, an attacker whose website is being crawled by App Search could craft a malicious sitemap.xml to traverse the filesystem of the host running the instance and obtain sensitive files.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 13 products
- OpenShift Service Mesh 1
- OpenShift Service Mesh 2.0
- Red Hat Decision Manager 7
- Red Hat Fuse 7
- Red Hat Integration Camel K 1
- Red Hat JBoss Data Grid 6
- Red Hat JBoss Fuse 6
- Red Hat JBoss Fuse Service Works 6
- Red Hat OpenShift Container Platform 3.11
- Red Hat OpenShift Container Platform 4
- Red Hat OpenStack Platform 10 (Newton)
- Red Hat Process Automation 7
- Red Hat Quay 3
Timeline
- 2026-10-02 Threatist record created from CVE-2021-22140
- 2026-10-03 Alias added: GHSA-6j6p-6hm2-m4qc
References
More Elastic App Search vulnerabilities
- TI-2020-05659 Cross-site scripting in Elastic App Search CVSS 3.1MEDIUM 6.1
Sources
- CVE-2021-22140 · CVE Program
- CVE-2021-22140 · NVD
- FIRST EPSS
- GHSA-6j6p-6hm2-m4qc · GitHub Advisory Database · CC BY 4.0
- CVE-2021-22140 · Red Hat security data · CC BY 4.0
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