Markdown-it 14.1.0 - Cross-site scripting (XSS)
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-79.
Summary
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/renderer.mjs. This issue affects markdown-it: 14.1.0. NOTE: the Supplier does not consider this issue to be a vulnerability.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| markdown-it | markdown-it | 14.1.0 | — | No fix listed | CNA |
- markdown-it Vendormarkdown-it Affected 14.1.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:markdown-it_project:markdown-it:14.1.0:*:*:*:*:*:*:* | 14.1.0 | Vulnerable | Markdown-it Project |
- cpe:2.3:a:markdown-it_project:markdown-it:14.1.0:*:*:*:*:*:*:* Versions 14.1.0 Vulnerable ·Markdown-it Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| OpenShift Serverless | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-7969
- 2026-10-03 Alias added: GHSA-vgm8-mvfh-rj89
- 2026-10-27 Affected versions changed · Red Hat
References
More markdown-it vulnerabilities
- TI-2026-36071 linkify-it: Quadratic algorithmic complexity in LinkifyIt#match scan loop CVSS 4.0HIGH 8.7
- TI-2026-78161 Quadratic-time parsing in markdown-it link reference definitions CVSS 3.1HIGH 7.5
- TI-2026-76535 Quadratic time in markdown-it smartquotes causes denial of service CVSS 3.1HIGH 7.5
- TI-2026-42701 linkify-it: Quadratic-complexity DoS via the `mailto:` validator scan-loop on attacker text CVSS 3.1HIGH 7.5
- TI-2026-36244 markdown-it: Quadratic complexity DoS in smartquotes rule via replaceAt string operations CVSS 3.1MEDIUM 5.3
- TI-2022-06047 Uncontrolled Resource Consumption in markdown-it CVSS 3.1MEDIUM 5.3
Sources
- CVE-2025-7969 · CVE Program
- CVE-2025-7969 · NVD
- FIRST EPSS
- GHSA-vgm8-mvfh-rj89 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-7969 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences