# Leandrocp Mdex vulnerabilities

Source: https://junglewise.ai/threats/technologies/mdex  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/mdex.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 6 vulnerabilities in Leandrocp Mdex: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54889, was published on 29 June 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 6 (0 critical, 0 exploited in the wild)

## About Leandrocp Mdex

A Markdown parser for Elixir that uses the comrak Rust library for high performance.

## Latest Leandrocp Mdex vulnerabilities

- [CVE-2026-54889: leandrocp mdex XSS in Quill Delta conversion](https://junglewise.ai/threats/cve-2026-54889-leandrocp-mdex-xss-in-quill-delta-conversion) (info, CVSS 5.1, published 29 Jun 2026)
- [CVE-2026-54888: leandrocp mdex uncontrolled recursion in Markdown parsing](https://junglewise.ai/threats/cve-2026-54888-leandrocp-mdex-uncontrolled-recursion-in-markdown-parsing) (info, CVSS 6.9, published 29 Jun 2026)
- [CVE-2026-53429: leandrocp mdex memory leak in escaped-tag rendering](https://junglewise.ai/threats/cve-2026-53429-leandrocp-mdex-memory-leak-in-escaped-tag-rendering) (info, CVSS 6.9, published 29 Jun 2026)
- [CVE-2026-53426: leandrocp MDEx atom-table exhaustion in parse_document](https://junglewise.ai/threats/cve-2026-53426-leandrocp-mdex-atom-table-exhaustion-in-parse-document) (info, CVSS 8.2, published 29 Jun 2026)
- [CVE-2026-53428: leandrocp mdex denial of service via unbounded memory allocation](https://junglewise.ai/threats/cve-2026-53428-leandrocp-mdex-denial-of-service-via-unbounded-memory-allocation) (info, CVSS 6.9, published 29 Jun 2026)
- [CVE-2026-53427: leandrocp MDEx XSS in Lumis adapter code-fence attributes](https://junglewise.ai/threats/cve-2026-53427-leandrocp-mdex-xss-in-lumis-adapter-code-fence-attributes) (info, CVSS 2.3, published 29 Jun 2026)

## Most severe Leandrocp Mdex vulnerabilities

- [CVE-2026-53426: leandrocp MDEx atom-table exhaustion in parse_document](https://junglewise.ai/threats/cve-2026-53426-leandrocp-mdex-atom-table-exhaustion-in-parse-document) (info, CVSS 8.2, published 29 Jun 2026)
- [CVE-2026-54888: leandrocp mdex uncontrolled recursion in Markdown parsing](https://junglewise.ai/threats/cve-2026-54888-leandrocp-mdex-uncontrolled-recursion-in-markdown-parsing) (info, CVSS 6.9, published 29 Jun 2026)
- [CVE-2026-53429: leandrocp mdex memory leak in escaped-tag rendering](https://junglewise.ai/threats/cve-2026-53429-leandrocp-mdex-memory-leak-in-escaped-tag-rendering) (info, CVSS 6.9, published 29 Jun 2026)
- [CVE-2026-53428: leandrocp mdex denial of service via unbounded memory allocation](https://junglewise.ai/threats/cve-2026-53428-leandrocp-mdex-denial-of-service-via-unbounded-memory-allocation) (info, CVSS 6.9, published 29 Jun 2026)
- [CVE-2026-54889: leandrocp mdex XSS in Quill Delta conversion](https://junglewise.ai/threats/cve-2026-54889-leandrocp-mdex-xss-in-quill-delta-conversion) (info, CVSS 5.1, published 29 Jun 2026)
- [CVE-2026-53427: leandrocp MDEx XSS in Lumis adapter code-fence attributes](https://junglewise.ai/threats/cve-2026-53427-leandrocp-mdex-xss-in-lumis-adapter-code-fence-attributes) (info, CVSS 2.3, published 29 Jun 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Leandrocp technologies

- [Leandrocp Mdex Native](https://junglewise.ai/threats/technologies/mdex-native): 4 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Leandrocp Mdex vulnerabilities", https://junglewise.ai/threats/technologies/mdex, 9 November 2026.