CVE-2021-44550: Access Control vulnerability within CoreNLP
Summary
CVE-2021-44550: Access Control vulnerability within CoreNLP. Affects edu.stanford.nlp:stanford-corenlp versions < 4.4.0. Fixed in 4.4.0. How to fix ↓
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Background
CoreNLP is a Java library that provides a set of natural language processing tools. It is commonly used for tasks such as tokenization, part-of-speech tagging, named entity recognition, and sentiment analysis. The vulnerability affects CoreNLP version 4.3.2 and earlier.
Vulnerability Detail
An Incorrect Access Control vulnerability exists in CoreNLP 4.3.2 via the classifier in NERServlet.java (lines 158 and 159). This vulnerability allows an attacker to bypass access controls and potentially gain unauthorized access to sensitive information or perform malicious actions. The severity of this vulnerability is rated as CRITICAL with a CVSS score of 9.8. It is classified under CWE-863.
How To Fix
Latest published version: 4.6.0 as of 22 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
4.4.0
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is essential to update to the fixed version as soon as possible.
Conclusion
The Access Control vulnerability in CoreNLP 4.3.2 and earlier can lead to unauthorized access and potential misuse of sensitive information. It is crucial to update to CoreNLP version 4.4.0 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
CoreNLP is a Java library for natural language processing tasks.
This vulnerability allows unauthorized access to sensitive information or malicious actions.
The severity of this vulnerability is rated as CRITICAL with a CVSS score of 9.8.
Upgrade to CoreNLP version 4.4.0 or later.
No, it is necessary to update to the fixed version.
References
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