CVE-2021-32012

Name: CVE-2021-32012
Creator: NVD / NIST
Published: 2021-07-19T14:15:08.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.88%

Last modified Jun 17, 2026

CVE-2021-32012 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js (issue 1 of 2).. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

Description

SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js (issue 1 of 2).

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.88%

54.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Sheetjs Project	Sheetjs	<= 0.16.9
Sheetjs Project	Sheetjs Pro	<= 0.16.9
Oracle	Rest Data Services	< 21.2.4

References

https://floqast.com/engineering-blog/post/fuzzing-and-parsing-securely/Third Party Advisory
https://sheetjs.com/proProduct, Vendor Advisory
https://www.npmjs.com/package/xlsx/v/0.17.0Product, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
https://floqast.com/engineering-blog/post/fuzzing-and-parsing-securely/Third Party Advisory
https://sheetjs.com/proProduct, Vendor Advisory
https://www.npmjs.com/package/xlsx/v/0.17.0Product, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory

Timeline

Published: Jul 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-32012?

SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js (issue 1 of 2).

How severe is CVE-2021-32012?

CVE-2021-32012 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32012?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-32012?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST