What is CVE-2023-30533?

CVE-2023-30533 is a high-severity vulnerability in Sheetjs, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.8/10. Published 2023-04-24.

How severe is CVE-2023-30533?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-30533 known to be exploited?

7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Prototype Pollution in Sheetjs

CVE-2023-30533

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.

Vulnerability class: Prototype Pollution

EPSS: 0.010 (58.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Sheetjs
N/a — versions n/a

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

Public proof-of-concept exploits

References

cve@mitre.org (Release Notes)
cve@mitre.org (Vendor Advisory)
cve@mitre.org

Frequently asked questions

What is CVE-2023-30533?: CVE-2023-30533 is a high-severity vulnerability in Sheetjs, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.8/10. Published 2023-04-24.
How severe is CVE-2023-30533?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-30533 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.