CVE-2023-30533 Prototype Pollution in sheetJS
Prototype pollution in SheetJS allows attackers to manipulate object prototypes via crafted files, potentially leading to code execution or privilege escalation.
- 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-2023-30533?
CVE-2023-30533 is a high-severity vulnerability in n/a, published on 24 Apr 2023. 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 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.
Weakness: CWE-1321
Which versions are affected by CVE-2023-30533?
2 open source packages ship an affected version, including xlsx. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
xlsx npm | All versions | None |
xlsx npm | All versions | None |
Products include Sheetjs Sheetjs.
How do I fix CVE-2023-30533?
Upgrade to a fixed version.
Is CVE-2023-30533 being exploited?
There is no known exploitation of CVE-2023-30533 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as CLEANSTART-2026-WV02485, GHSA-4r6h-8v6p-xvw6, ROOT-APP-NPM-CVE-2023-30533.