VDB
CVE-2025-66400
CVE-2025-66400
PUBLISHED
CVSS 6.900000095367432 MEDIUM
mdast-util-to-hast has unsanitized class attribute
EPSS 0.33% · 25.8th percentile
Risk Scores
CVSS 4.0
6.900000095367432
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS Score
0.33%
25.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| npm | mdast-util-to-hast | 13.0.0 |
| unifiedjs | mdast-util-to-hast | 13.0.0 |
| syntax-tree | mdast-util-to-hast | >= 13.0.0, < 13.2.1 |
Timeline
- Dec 1, 2025 CVE Published
- Dec 2, 2025 EPSS Score
- Dec 7, 2025 EPSS Score
- Dec 12, 2025 EPSS Score
- Dec 18, 2025 EPSS Score
- Dec 23, 2025 EPSS Score
- Dec 28, 2025 EPSS Score
- Jan 2, 2026 EPSS Score
- Jan 8, 2026 EPSS Score
- Jan 13, 2026 EPSS Score
- Jan 18, 2026 EPSS Score
- Jan 23, 2026 EPSS Score
References
- https://github.com/syntax-tree/mdast-util-to-hast/commit/ab3a79570a1afbfa7efef5d4a0cd9b5caafbc5d7 fix
- https://github.com/syntax-tree/mdast-util-to-hast/security/advisories/GHSA-4fh9-h7wg-q85m url
- https://nvd.nist.gov/vuln/detail/CVE-2025-66400 advisory
- https://github.com/syntax-tree/mdast-util-to-hast package
- https://github.com/syntax-tree/mdast-util-to-hast/commit/6fc783ae6abdeb798fd5a68e7f3f21411dde7403 fix