CVE-2021-32012 Denial of Service in SheetJS Pro
Attackers can cause denial of service via memory consumption by providing a crafted .xlsx document to the SheetJS library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-32012?
CVE-2021-32012 is a medium-severity denial of service vulnerability in n/a, published on 19 Jul 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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).
Weakness: CWE-400
Which versions are affected by CVE-2021-32012?
4 open source packages ship an affected version, including org.webjars.npm:xlsx and xlsx. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
org.webjars.npm:xlsx Maven | All versions | 0.17.0 |
org.webjars.npm:xlsx Maven | All versions | 0.17.0 |
xlsx npm | All versions | 0.17.0 |
xlsx npm | All versions | 0.17.0 |
Products include Oracle Rest Data Services, Sheetjs Project Sheetjs, Sheetjs Project Sheetjs Pro.
How do I fix CVE-2021-32012?
Upgrade org.webjars.npm:xlsx to 0.17.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-32012 being exploited?
There is no known exploitation of CVE-2021-32012 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2026-46840 Auth bypass in Oracle REST Data Services
- CVE-2026-46775 Denial of service in Oracle REST Data Services
- CVE-2026-46839 Auth bypass in Oracle REST Data Services
- CVE-2026-35277 Missing authorization in Oracle REST Data Services
- CVE-2026-35266 Cross-site request forgery in Oracle REST Data Services
Sources
Also known as GHSA-3x9f-74h4-2fqr.