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VulnerabilityPublished

CVE-2026-88976: udecode plate · Cross-site Scripting

Affects udecode plateSource CVE Database V5

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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

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
udecodeplateAffected
  • <53.3.11
  • >=54.0.0-beta.0 <=54.0.0-beta.1
Fixed in
  • 53.3.11

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

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