CVE-2021-23926XMLBeans XML Entity Expansion
- 9.1CriticalCVSS base score
- 6.3%Exploitation in 30 daysEPSS · top 6.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The XML parsers used by XMLBeans up to version 2.6.0 did not set the properties needed to protect the user from malicious XML input. Vulnerabilities include possibilities for XML Entity Expansion attacks. Affects XMLBeans up to and including v2.6.0.
Timeline
ID reserved
By apache
- 2 days later
· 2 days later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 6.3% · top 6.3% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Affected products
Apache Software Foundation · Apache XMLBeans
- affected Apache XMLBeans – ≤ 2.6.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.xmlbeans:xmlbeansGHSA-mw3r-pfmg-xp92 (opens in a new tab)
References
References8
- https://poi.apache.org/ (opens in a new tab)x_refsource_MISCx_transferred
- https://issues.apache.org/jira/browse/XMLBEANS-517 (opens in a new tab)x_refsource_MISCx_transferred
- [axis-java-dev] 20210312 xmlbeans 2.6.0 and CVE-2021-23926 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [axis-java-dev] 20210312 Re: xmlbeans 2.6.0 and CVE-2021-23926 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20210628 [SECURITY] [DLA 2693-1] xmlbeans security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.oracle.com/security-alerts/cpuoct2021.html (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20210513-0004/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.oracle.com/security-alerts/cpujul2022.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-1365 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-mw3r-pfmg-xp92 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-23926)Record last updated .