CVE-2023-39020

FAUCET Score

CVE-2023-39020 is a critical code injection vulnerability affecting stanford-parser versions 3.9.2 and below, specifically within the edu.stanford.nlp.io.getBZip2PipedInputStream component. This flaw allows unauthenticated remote attackers to execute arbitrary code with high impact on confidentiality, integrity, and availability, as indicated by its CVSS score of 9.8. Despite its severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 4.5.5CPE matchmatch criteria	cpe:2.3:a:stanford:stanford_parser::::::::

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

0.87%

Probability of exploitation in next 30 days

EPSS Percentile

55.1%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0087 is in the 39th percentile among its peer group of 36,897 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-parserFixed in: 4.5.5

Vendor Advisories (1)

mavenGHSA-353m-jh2m-72v4critical

Code injection in stanford-parser

Jul 28, 2023

References

github.com / LetianYuan/My-CVE-Public-References/tree/main/edu_stanford_nlp_stanford-parser

Exploit