What’s Vulnerable › Vulnerabilities

CVE-2018-16459

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-09-06 · updated 2026-06-17
• Weakness: CWE-79

Description

An unescaped payload in exceljs <v1.6 allows a possible XSS via cell value when worksheet is displayed in browser.

Affected products

• https://github.com/guyonroche exceljs: before 1.6 — fixed in 1.6

How to fix

Upgrade to a fixed version: https://github.com/guyonroche exceljs 1.6. Check the vendor advisory for mitigations.

References

• https://hackerone.com/reports/356809
• https://hackerone.com/reports/356809

Get alerted when CVE-2018-16459 or the next vulnerability affects your stack