CVE-2026-57530 (GCVE-0-2026-57530)
Vulnerability from cvelistv5 – Published: 2026-07-24 19:08 – Updated: 2026-07-25 10:30 X_Open Source
VLAI
EPSS
VEX
Title
Milkdown < 7.21.3 Stored XSS via javascript: URL in link href
Summary
Milkdown before 7.21.3 contains a stored cross-site scripting vulnerability in the @milkdown/preset-commonmark and @milkdown/components packages that allows attackers with document write access to execute arbitrary JavaScript in the browser context of any user who opens the document or clicks a rendered link. The parseMarkdown runner stores raw URL values from the remark AST as href mark attributes without URL scheme validation, and the ineffective DOMPurify.sanitize call in edit-view.ts treats the bare URL string as a text node and returns it unchanged, allowing javascript: payloads to pass through the link-tooltip preview component and read-only mode anchor elements unmodified.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 19:47 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/Milkdown/milkdown/releases/tag… | release-notespatch |
| https://github.com/Milkdown/milkdown/pull/2410 | issue-trackingpatch |
| https://github.com/Milkdown/milkdown/commit/db1ae… | patch |
| https://www.npmjs.com/package/@milkdown/preset-co… | product |
| https://www.npmjs.com/package/@milkdown/components | product |
| https://www.vulncheck.com/advisories/milkdown-sto… | third-party-advisory |
Impacted products
Date Public
2026-07-12 00:00
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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