What’s Vulnerable › Vulnerabilities

CVE-2021-3878: Improper Restriction of XML External Entity Reference in stanfordnlp/corenlp

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-15 · updated 2026-06-17
• Weakness: CWE-611

Description

corenlp is vulnerable to Improper Restriction of XML External Entity Reference

Affected products

• stanfordnlp/corenlp: before 4.3.1 — fixed in 4.3.1

How to fix

Upgrade to a fixed version: stanfordnlp/corenlp 4.3.1. Check the vendor advisory for mitigations.

References

• https://github.com/stanfordnlp/corenlp/commit/e5bbe135a02a74b952396751ed3015e8b8252e99
• https://huntr.dev/bounties/a11c889b-ccff-4fea-9e29-963a23a63dd2
• https://github.com/stanfordnlp/corenlp/commit/e5bbe135a02a74b952396751ed3015e8b8252e99
• https://huntr.dev/bounties/a11c889b-ccff-4fea-9e29-963a23a63dd2

Get alerted when CVE-2021-3878 or the next vulnerability affects your stack