An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParser
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Nutch | Apache Nutch – 1.17 | — | No fix listed | CNA |
| — | org.apache.nutch:nutch (Maven) | before 1.18 | 1.18 | Patch available | GHSA-fxhp-wrw9-3r97 |
- Apache Nutch VendorApache Affected Apache Nutch – 1.17 Fixed in — No fix listed CNA
- org.apache.nutch:nutch (Maven) Vendor— Affected before 1.18 Fixed in 1.18 Patch available GHSA-fxhp-wrw9-3r97
Remediation
- Fix · GHSA-fxhp-wrw9-3r97 org.apache.nutch:nutch (Maven) Fixed in 1.18 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23901
- 2026-10-03 Alias added: GHSA-fxhp-wrw9-3r97
References
Advisory 3
Other 6
- [nutch-dev] 20210125 Re: CVE-2021-23901: An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParser
- [announce] 20210124 CVE-2021-23901: An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParser
- https://github.com/apache/nutch/pull/563
- https://lists.apache.org/thread.html/r5e2f7737b42c73a3325f3c2c8cdee1ec27631b3a0e144104d84d70e6@%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/r7ddfd680aa7ea001ca8da63bb23e3f8caa095a8b4f2261e46bade5c7@%3Cdev.nutch.apache.org%3E
- https://security.netapp.com/advisory/ntap-20210513-0003
More Apache Nutch vulnerabilities
- TI-2016-05850 Apache Tika before 1.14 allows Java code execution for serialized objects embedded in… CVSS 3.1CRITICAL 9.8
- TI-2026-30276 Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API) CVSS 3.1CRITICAL 9.8
- TI-2026-30274 Apache Nutch: Unauthenticated forced shutdown and job interruption in Nutch Server (Nutch REST API) CVSS 3.1CRITICAL 9.1
- TI-2026-30275 Apache Nutch: Unauthenticated remote code execution (RCE) via JEXL injection in Nutch Server (Nutch REST API) CVSS 3.1HIGH 8.8
Sources
- CVE-2021-23901 · CVE Program
- CVE-2021-23901 · NVD
- FIRST EPSS
- GHSA-fxhp-wrw9-3r97 · GitHub Advisory Database · CC BY 4.0
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