CVE-2023-30533

HIGHNVD 7.87.8—

7.8

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 v3: 7.8
EG Score: 7.8(medium)
EPSS: 92.6%
KEV: Not listed

Published

April 24, 2023

Last Modified

February 4, 2025

References (6)

cve@mitrehttps://cdn.sheetjs.com/advisories/CVE-2023-30533
cve@mitrehttps://git.sheetjs.com/sheetjs/sheetjs/issues/2986
cve@mitrehttps://git.sheetjs.com/sheetjs/sheetjs/src/branch/master/CHANGELOG.md
af854a3a-2127-422b-91ae-364da2661108https://cdn.sheetjs.com/advisories/CVE-2023-30533
af854a3a-2127-422b-91ae-364da2661108https://git.sheetjs.com/sheetjs/sheetjs/issues/2986
af854a3a-2127-422b-91ae-364da2661108https://git.sheetjs.com/sheetjs/sheetjs/src/branch/master/CHANGELOG.md

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
npm	xlsx	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

npm(1)

Package	Vulnerable range	Fixed in	Dependents
xlsx	—	—	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

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

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 02:29 UTCEG score recompute
2026-05-25 02:29 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-30533?

CVE-2023-30533 is a high vulnerability published on April 24, 2023. 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.

When was CVE-2023-30533 disclosed?

CVE-2023-30533 was first published in the National Vulnerability Database on April 24, 2023, with the most recent update on February 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-30533 actively exploited?

CVE-2023-30533 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-30533?

CVE-2023-30533 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2023-30533?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30533, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-30533

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