Cross-site scripting (XSS) in markdown-it-toc
Priority LOW 33CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
This affects all versions of package markdown-it-toc. The title of the generated toc and the contents of the header are not escaped.
Why it matters now
EPSS 0.00614 49th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | markdown-it-toc | all versions | — | No fix listed | CNA |
| — | markdown-it-toc (npm) | up to 1.1.0 | — | No fix listed | GHSA-wfvx-fx73-3rfj |
- markdown-it-toc Vendor— Affected all versions Fixed in — No fix listed CNA
- markdown-it-toc (npm) Vendor— Affected up to 1.1.0 Fixed in — No fix listed GHSA-wfvx-fx73-3rfj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:markdown-it-toc_project:markdown-it-toc:*:*:*:*:*:node.js:*:* | all versions | Vulnerable | Markdown-it-toc Project |
- cpe:2.3:a:markdown-it-toc_project:markdown-it-toc:*:*:*:*:*:node.js:*:* Versions all versions Vulnerable ·Markdown-it-toc Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28455
- 2026-10-03 Alias added: GHSA-wfvx-fx73-3rfj
References
Sources
- CVE-2020-28455 · CVE Program
- CVE-2020-28455 · NVD
- FIRST EPSS
- GHSA-wfvx-fx73-3rfj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences