How severe is CVE-2024-34273?

CVE-2024-34273 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-34273 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-34273?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-34273 have an EU (EUVD) identifier?

Yes. CVE-2024-34273 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1390.

When was CVE-2024-34273 published?

CVE-2024-34273 was published on 2024-05-16 and last updated on 2026-06-17.

CVE-2024-34273

CVE-2024-34273 is a medium-severity vulnerability with a CVSS 3.x base score of 5.9. 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-1321.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-1390
Weakness: CWE-1321
Published: 2024-05-16
Last modified: 2026-06-17

Description

njwt up to v0.4.0 was discovered to contain a prototype pollution in the Parser.prototype.parse method.

Frequently asked questions

What is CVE-2024-34273?: njwt up to v0.4.0 was discovered to contain a prototype pollution in the Parser.prototype.parse method.
How severe is CVE-2024-34273?: CVE-2024-34273 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-34273 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-34273?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-34273 have an EU (EUVD) identifier?: Yes. CVE-2024-34273 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1390.
When was CVE-2024-34273 published?: CVE-2024-34273 was published on 2024-05-16 and last updated on 2026-06-17.

References

https://github.com/chrisandoryan/vuln-advisory/blob/main/nJwt/CVE-2024-34273.md

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