CVE-2026-88976: udecode plate · Cross-site Scripting
Affects udecode plateSource CVE Database V5
Not known to be exploited · CVSS 6.1 Medium : upgrade to 53.3.11 when convenient.
Data as of 31 Oct 2026, 08:20 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 53.3.11
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade udecode plate to 53.3.11.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| udecodeplate | Affected
| Fixed in
|
AI-suggested
Upgrade to Plate version 53.3.11 or later. The vulnerability is fixed in this version. No other mitigation is indicated by the vendor advisory.
Description
Plate is a rich-text editor with AI and shadcn/ui. Prior to 53.3.11, and in the discontinued 54.0.0-beta.0 through 54.0.0-beta.1 builds, Plate core HTML deserialization APIs parse supplied HTML strings in the active document. When an application passes untrusted or cross-user HTML to these APIs, certain HTML attributes can trigger browser behavior before the HTML is converted into editor nodes. This can allow attacker-controlled script to execute in the consuming application's origin when another user loads the deserialized content. This issue is fixed in version 53.3.11.
References
- github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6 (opens in a new tab)
- github.com/udecode/plate/pull/5117 (opens in a new tab)
- github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b (opens in a new tab)
- github.com/udecode/plate/releases/tag/v53.3.11 (opens in a new tab)