PatchTheCVECVE-2023-30533: SheetJS Community Edition before 0.19.3 allows Prototype Pollution via a crafted file
CVE-2023-30533 is a high-severity flaw (CVSS 7.8) affecting sheetjs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 1.0% (top 38%) |
| CISA exploited list | No |
| Weakness | CWE-1321 |
| Published | 2023-04-24 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-30533?
sheetjs: upgrade to 0.19.3. Exact commands for each OS are on this page.
Is CVE-2023-30533 being exploited?
CVE-2023-30533 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-30533 affect?
CVE-2023-30533 affects sheetjs. Severity is high (CVSS 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.
How urgent is CVE-2023-30533?
Priority 43/100. High severity