How severe is CVE-2023-39020?

CVE-2023-39020 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-39020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39020?

CVE-2023-39020 affects Stanford Stanford Parser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39020?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-39020 published?

CVE-2023-39020 was published on 2023-07-28 and last updated on 2026-06-17.

CVE-2023-39020

CVE-2023-39020 is a critical-severity vulnerability in Stanford Stanford Parser with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Stanford Stanford Parser
Published: 2023-07-28
Last modified: 2026-06-17

Description

stanford-parser v3.9.2 and below was discovered to contain a code injection vulnerability in the component edu.stanford.nlp.io.getBZip2PipedInputStream. This vulnerability is exploited via passing an unchecked argument.

Frequently asked questions

What is CVE-2023-39020?: stanford-parser v3.9.2 and below was discovered to contain a code injection vulnerability in the component edu.stanford.nlp.io.getBZip2PipedInputStream. This vulnerability is exploited via passing an unchecked argument.
How severe is CVE-2023-39020?: CVE-2023-39020 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-39020 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39020?: CVE-2023-39020 affects Stanford Stanford Parser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39020?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-39020 published?: CVE-2023-39020 was published on 2023-07-28 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:stanford:stanford_parser:*:*:*:*:*:*:*:*

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