CVE-2021-23901An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParser
- 9.1CriticalCVSS base score
- 4.4%Exploitation in 30 daysEPSS · top 8.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
An XML external entity (XXE) injection vulnerability was discovered in the Nutch DmozParser and is known to affect Nutch versions < 1.18. XML external entity injection (also known as XXE) is a web security vulnerability that allows an attacker to interfere with an application's processing of XML data. It often allows an attacker to view files on the application server filesystem, and to interact with any back-end or external systems that the application itself can access. This issue is fixed in Apache Nutch 1.18.
Timeline
ID reserved
By apache
- 13 days later
· 13 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:H/A:N |
- EPSS (exploitation in 30 days)
- 4.4% · top 8.5% 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 Nutch
- affected Apache Nutch – ≤ 1.17
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.nutch:nutchGHSA-fxhp-wrw9-3r97 (opens in a new tab)
References
References5
- https://lists.apache.org/thread.html/r090321840b44cc91086c4e317bf2baffa270749dde6c1273b6567f7c%40%3Cdev.nutch.apache.org%3E (opens in a new tab)x_refsource_MISCx_transferred
- https://issues.apache.org/jira/browse/NUTCH-2841 (opens in a new tab)x_refsource_MISCx_transferred
- [nutch-dev] 20210125 Re: CVE-2021-23901: An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParser (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [announce] 20210124 CVE-2021-23901: An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParser (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://security.netapp.com/advisory/ntap-20210513-0003/ (opens in a new tab)x_refsource_CONFIRMx_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-2022-1420 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-fxhp-wrw9-3r97 (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-2021-23901)Record last updated .