CVE-2023-30533: sheetjs Prototype Pollution
CVSS: 7.8v3.1HighModified
AliasesGHSA-4r6h-8v6p-xvw6
Published 24-04-2023Last modified 04-02-2025
Vulnerability summary
CVE-2023-30533 is a high (CVSS 7.8) Prototype Pollution vulnerability in sheetjs. EPSS estimates a 0.99% chance of exploitation in the next 30 days, higher than 61.9% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.99%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-04-2023PublishedVulnerability first disclosed.
- 04-02-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · NpmEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.99%
Chance of exploitation in the next 30 days
Percentile
62%
Versus all other CVEs
30-day change
0.00 pp
From 0.99% on 20-09-2026
20-09-202620-10-2026
EPSS score0.99%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Npm1 product
- xlsxAll versions (No fix recorded)
Sheetjs1 product
- sheetjs< 0.19.3
2 vendors · 2 products
