https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-03T23:40:27.143313+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/bdu:2025-00142 bdu:2025-00142 2026-10-03T23:40:27.190919+00:00 bdu:2025-00142 https://vulnerability.circl.lu/vuln/fkie_cve-2024-56510 fkie_cve-2024-56510 2026-10-03T23:40:27.191061+00:00

@marp-team/marp-core is the core for Marp, which is the ecosystem to write your presentation with plain Markdown. Marp Core from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization. Marp Core v3.9.1 and v4.0.1 have been patched to fix that. If you are unable to update the package immediately, disable all HTML tags by setting html: false option in the Marp class constructor.

 https://vulnerability.circl.lu/vuln/ghsa-x52f-h5g4-8qv5 GHSA-x52f-h5g4-8qv5 — Marp Core allows XSS by improper neutralization of HTML sanitization 2026-10-03T23:40:27.191140+00:00

Affected: npm: @marp-team/marp-core

Marp Core ([`@marp-team/marp-core`](https://www.npmjs.com/package/@marp-team/marp-core)) from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization.

### Impact

Marp Core includes an HTML sanitizer with allowlist support. In the affected versions, the built-in allowlist is enabled by default. When the allowlist is active, if insufficient HTML comments are included, the sanitizer may fail to properly sanitize HTML content and lead cross-site scripting (XSS).

### Patches

Marp Core [v3.9.1](https://github.com/marp-team/marp-core/releases/tag/v3.9.1) and [v4.0.1](https://github.com/marp-team/marp-core/releases/tag/v4.0.1) have been patched to fix that.

### Workarounds

If you are unable to update the package immediately, disable all HTML tags by setting `html: false` option in the `Marp` class constructor.

```javascript const marp = new Marp({ html: false }) ```

### References

- [CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')](https://cwe.mitre.org/data/definitions/79.html) - https://github.com/marp-team/marp-core/pull/282 - https://github.com/marp-team/marp-core/commit/61a1def244d1b6faa8e2c0be97ec0b68cab3ab49

### Credits

Thanks to @Ry0taK for finding out this vulnerability.