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CVE-2021-44550

28
FAUCET Score

CVE-2021-44550 is a critical Incorrect Access Control vulnerability affecting Stanford CoreNLP versions up to 4.3.2, specifically within the NERServlet.java component. With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to remotely execute arbitrary code, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is it listed in CISA's KEV catalog, indicating no active exploitation. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
4.3.2CPE matchmatch criteria
cpe:2.3:a:stanford:corenlp:4.3.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 53rd percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: edu.stanford.nlp:stanford-corenlpFixed in: 4.4.0

Vendor Advisories (1)

mavenGHSA-x2p8-rgfm-qw3vcritical

Access Control vulnerability within CoreNLP

Feb 25, 2022

References

github.com / stanfordnlp/CoreNLP/issues/1222
ExploitIssue TrackingThird Party Advisory