CVE-2026-65842: Plate SSRF With Response Disclosure Vulnerability

HIGH
Advisory Identifier: GHSA-4q39-2jhr-7qx8
Share
CVSS 8.2
CWE-918
Published
Advisory Summary

CVE-2026-65842 is a HIGH (CVSS 8.2) ssrf with response disclosure vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Plate libraries in the npm ecosystem. The issue involves ssrf with response disclosure in docx image embedding. Remediation is available by upgrading affected packages to version 53.3.2.

CVE-2026-65842 at a Glance

CVE Identifier CVE-2026-65842
GHSA Identifier GHSA-4q39-2jhr-7qx8
Severity HIGH
CVSS v3.1 Base Score 8.2
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Plate
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability Low (A:L)

How to Fix CVE-2026-65842

To remediate this vulnerability, upgrade all affected Plate dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

@platejs/docx-io fixed: 53.3.2 
npm install @platejs/docx-io@53.3.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls @platejs/docx-io

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-65842, inspect your project dependencies using npm:

npm ls @platejs/docx-io

Analyze the terminal output to locate any version of Plate in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 53.3.2), your application is affected.

Note: The npm ls @platejs/docx-io command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Plate, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary `@platejs/docx-io` can fetch remote image URLs while converting HTML to DOCX. When an application converts attacker-controlled HTML in a server-side or privileged environment, this can cause the application environment to make unintended outbound requests and include fetched image data in the generated DOCX. ## Impact Applications are affected when they use `@platejs/docx-io` to convert untrusted HTML that may contain remote image references, especially in server-side conversion workflows or environments with access to internal network resources. Affected package: - `@platejs/docx-io` versions `< 53.3.2` ## Patched versions Upgrade to `@platejs/docx-io` version `53.3.2` or later. ## Workarounds If you cannot upgrade immediately, do not pass untrusted HTML with remote image URLs to DOCX export. Sanitize untrusted HTML to remove remote image references, convert trusted images to data URIs before conversion, or run conversion in an environment with restricted outbound network access. ## Credits Thanks to EQSTLab for reporting this issue.

CVE-2026-65842 Affected Plate Versions

1 component(s)
Fixed Versions:
53.3.2
Product / Package Ecosystem Affected Versions Fixed Version
@platejs/docx-io
npm/@platejs/docx-io
npm
< 53.3.2
53.3.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/udecode/plate/security/advisories/GHSA-4q39-2jhr-7qx8
NVD — CVE-2026-65842 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65842
Plate Source Repository REPOSITORY
https://github.com/udecode/plate/pull/5053
Security Fix Commit FIX COMMIT
https://github.com/udecode/plate/commit/21aa59926f4bbd421027354823cca09c6700ed73
Plate Source Repository REPOSITORY
https://github.com/udecode/plate
Plate Release RELEASE
https://github.com/udecode/plate/releases/tag/v53.3.2

Frequently Asked Questions

What is CVE-2026-65842?
CVE-2026-65842 is a security vulnerability in Plate involving SSRF with response disclosure in DOCX image embedding under CWE-918: Server-Side Request Forgery (SSRF).
Which Plate versions are affected?
Affected versions include releases prior to 53.3.2 across affected packages: @platejs/docx-io.
What version fixes CVE-2026-65842?
Upgrading to 53.3.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @platejs/docx-io affected?
Yes, @platejs/docx-io is affected in releases prior to 53.3.2. Upgrade your dependency to 53.3.2 or later.
What is the CVSS score of CVE-2026-65842?
CVE-2026-65842 has a CVSS v3.1 base score of 8.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.
What CWE is associated with CVE-2026-65842?
CVE-2026-65842 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check npm dependencies for CVE-2026-65842?
Run the dependency tree command: 'npm ls @platejs/docx-io'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4q39-2jhr-7qx8",
  "modified" : "2026-09-02T22:14:54Z",
  "published" : "2026-09-02T22:14:54Z",
  "aliases" : [ "CVE-2026-65842" ],
  "summary" : "Plate: SSRF with response disclosure in DOCX image embedding",
  "details" : "## Summary\n\n`@platejs/docx-io` can fetch remote image URLs while converting HTML to DOCX. When an application converts attacker-controlled HTML in a server-side or privileged environment, this can cause the application environment to make unintended outbound requests and include fetched image data in the generated DOCX.\n\n## Impact\n\nApplications are affected when they use `@platejs/docx-io` to convert untrusted HTML that may contain remote image references, especially in server-side conversion workflows or environments with access to internal network resources.\n\nAffected package:\n\n- `@platejs/docx-io` versions `< 53.3.2`\n\n## Patched versions\n\nUpgrade to `@platejs/docx-io` version `53.3.2` or later.\n\n## Workarounds\n\nIf you cannot upgrade immediately, do not pass untrusted HTML with remote image URLs to DOCX export. Sanitize untrusted HTML to remove remote image references, convert trusted images to data URIs before conversion, or run conversion in an environment with restricted outbound network access.\n\n## Credits\n\nThanks to EQSTLab for reporting this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@platejs/docx-io"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "53.3.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/udecode/plate/security/advisories/GHSA-4q39-2jhr-7qx8"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-65842"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/udecode/plate/pull/5053"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/udecode/plate/commit/21aa59926f4bbd421027354823cca09c6700ed73"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/udecode/plate"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/udecode/plate/releases/tag/v53.3.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-02T22:14:54Z",
    "nvd_published_at" : "2026-08-20T17:19:23Z"
  }
}