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Tool Directory

CVE-2023-30533

HighPublished

SheetJS Community Edition before 0.19.3 allows Prototype Pollution via a crafted file. In other words. 0.19.2 and earlier are affected, whereas 0.19.3 and...

Published: Apr 24, 2023
Updated: Feb 4, 2025
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

1.0%

Low · next 30 days

Percentile: 60.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

SheetJS Community Edition before 0.19.3 allows Prototype Pollution via a crafted file. In other words. 0.19.2 and earlier are affected, whereas 0.19.3 and later are unaffected.

Sources

CVE-2023-30533PoC
There were no proper POCs for CVE-2023-30533 so I made one. (Reported by Vsevolod Kokorin)

Responsible use

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