← Vulnerability feed

Vulnerability record · CVE-2021-23901 · published 25 January 2021

CVE-2021-23901: Apache nutch xml external entity (xxe) vulnerability

Apache · Nutch

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.

9.1 CVSS 3.1 Critical EPSS 4.4% · top 9.1% CWE-611 · XML external entity (XXE)
9.1CVSS 3.1 base score, v2 6.4
4.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://issues.apache.org/jira/browse/NUTCH-2841 Issue TrackingPatchVendor Advisory
https://lists.apache.org/thread.html/r090321840b44cc91086c4e317bf2baffa270749dde6c1273b6567f7c%40%3Cdev.nutch.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r5e2f7737b42c73a3325f3c2c8cdee1ec27631b3a0e144104d84d70e6%40%3Cannounce.apache.org%
https://lists.apache.org/thread.html/r7ddfd680aa7ea001ca8da63bb23e3f8caa095a8b4f2261e46bade5c7%40%3Cdev.nutch.apache.org
https://security.netapp.com/advisory/ntap-20210513-0003/ Third Party Advisory
https://issues.apache.org/jira/browse/NUTCH-2841 Issue TrackingPatchVendor Advisory
https://lists.apache.org/thread.html/r090321840b44cc91086c4e317bf2baffa270749dde6c1273b6567f7c%40%3Cdev.nutch.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r5e2f7737b42c73a3325f3c2c8cdee1ec27631b3a0e144104d84d70e6%40%3Cannounce.apache.org%
https://lists.apache.org/thread.html/r7ddfd680aa7ea001ca8da63bb23e3f8caa095a8b4f2261e46bade5c7%40%3Cdev.nutch.apache.org
https://security.netapp.com/advisory/ntap-20210513-0003/ Third Party Advisory

Track CVE-2021-23901 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2016-8735Apache Tomcat JmxRemoteLifecycleListener remote code executionApache Tomcat's JmxRemoteLifecycleListener was not updated to match the Oracle CVE-2016-3427 credential-type fix, leaving a deserialization weakness …KEVEPSS 90%analysed6.1CVE-2020-11023jQuery DOM manipulation methods XSS via untrusted HTML option elementsjQuery versions 1.0.3 through before 3.5.0 execute untrusted code when HTML containing <option> elements from untrusted sources is passed to DOM mani…KEVEPSS 85%analysed9.8CVE-2026-41871Apache nutch missing authorization vulnerabilityMissing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Nutch Server (Nutch…EPSS 0.75%9.8CVE-2020-10683Dom4j project dom4j xml external entity (xxe) vulnerabilitydom4j before 2.0.3 and 2.1.x before 2.1.3 allows external DTDs and External Entities by default, which might enable XXE attacks. However, there is po…EPSS 7.3%9.8CVE-2018-18311Perl integer overflow vulnerabilityPerl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.EPSS 12%9.8CVE-2018-18314Perl memory buffer overflow vulnerabilityPerl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations.EPSS 6.1%9.8CVE-2018-18312Perl memory buffer overflow vulnerabilityPerl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.EPSS 12%9.8CVE-2017-7658Eclipse jetty http request smuggling vulnerabilityIn Eclipse Jetty Server, versions 9.2.x and older, 9.3.x (all non HTTP/1.x configurations), and 9.4.x (all HTTP/1.x configurations), when presented w…EPSS 19%

Source: NIST National Vulnerability Database (record CVE-2021-23901), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.