CVE-2018-16459
Cross-Site Scripting in exceljs
CVE-2018-16459 is a medium vulnerability (CVSS 6.1) in Exceljs Project Exceljs, published September 6, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.76%, the 55th percentile. Fixed in exceljs 1.6.0.
An unescaped payload in exceljs <v1.6 allows a possible XSS via cell value when worksheet is displayed in browser.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An unescaped payload in exceljs <v1.6 allows a possible XSS via cell value when worksheet is displayed in browser.
- Record
CVE-2018-16459- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
An unescaped payload in exceljs <v1.6 allows a possible XSS via cell value when worksheet is displayed in browser.
- Record
CVE-2018-16459- Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2018-0433 No score
An unescaped payload in exceljs <v1.6 allows a possible XSS via cell value when worksheet is displayed in browser.
- Record
EUVD-2018-0433- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2j2j-8rrv-264g
Cross-Site Scripting in exceljs
Versions of exceljs before 1.6.0 are vulnerable to cross-site scripting.
This vulnerability is due to exceljs not validating data from parsed XLSX file and embedding HTML tags, like <script> directly into the sheet cells. Because of this it's possible to inject malicious JavaScript code and execute it when data from the sheet is displayed in the browser.
Recommendation
Update to version 1.6.0 or later.
- Record
GHSA-2j2j-8rrv-264g- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-2j2j-8rrv-264g
Cross-Site Scripting in exceljs
Versions of exceljs before 1.6.0 are vulnerable to cross-site scripting.
This vulnerability is due to exceljs not validating data from parsed XLSX file and embedding HTML tags, like <script> directly into the sheet cells. Because of this it's possible to inject malicious JavaScript code and execute it when data from the sheet is displayed in the browser.
Recommendation
Update to version 1.6.0 or later.
- Record
GHSA-2j2j-8rrv-264g- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
exceljsnpm |
before 1.6.0 | 1.6.0 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |