Plate: Media embed provider metadata can bypass URL sanitization and execute iframe JavaScript
Published Jul 8, 2026
8.7
HIGHCVSS 3.1
EPSS 0.43%
Description
Plate is a rich-text editor with AI and shadcn/ui. From 53.0.0 until 53.1.4, the media embed renderer trusts serialized provider or sourceUrl metadata in useMediaState and skips parseMediaUrl protocol validation, allowing a crafted Plate document to set a known video provider while keeping url as a javascript: iframe source that the registry MediaEmbedElement renders directly as an iframe src when a victim opens the document. This issue is fixed in version 53.1.4.
Affected products
-
- Version >= 53.0.0, < 53.1.4StatusaffectedConstraints-
- Version
No data.
No data.
No Red Hat product state for this CVE.
@platejs/media
npm
Introduced 53.0.0 Fixed 53.1.4
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | @platejs/media | 53.0.0 | 53.1.4 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Jul 9, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
Jul–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.43% (0.00430) | 34.98th | v5 (v2026.06.15) |
| Jul 9, 2026 | 0.24% (0.00241) | 15.17th | v5 (v2026.06.15) |
References (6)
- https://github.com/advisories/GHSA-qj6x-xx2h-8hvv Advisory
- https://github.com/udecode/plate/commit/6214914ca811adf22d0ad503154494216eed68ba x_refsource_MISC
- https://github.com/udecode/plate/pull/5014 x_refsource_MISC
- https://github.com/udecode/plate/releases/tag/v53.1.4 x_refsource_MISC
- https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv exploitx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-55596
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-qj6x-xx2h-8hvv | Advisory | |
| https://github.com/udecode/plate/commit/6214914ca811adf22d0ad503154494216eed68ba | x_refsource_MISC | |
| https://github.com/udecode/plate/pull/5014 | x_refsource_MISC | |
| https://github.com/udecode/plate/releases/tag/v53.1.4 | x_refsource_MISC | |
| https://github.com/udecode/plate/security/advisories/GHSA-qj6x-xx2h-8hvv | exploitx_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-55596 |
Change history (0)
No recorded changes yet.