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Back to active CVEs
Low · CVSS 3.1CVE-2026-116687GHSA-V6MG-96C6-GMPQ

CKEditor: Cross-site scripting (XSS) in the engine packageCVE-2026-116687

Answer in brief

CVE-2026-116687 records a Low severity (CVSS 3.1) vulnerability in CKEditor: Cross-site scripting (XSS) in the engine package. The current sources do not mark it as known exploited. The current feed maps ckeditor/ckeditor5 (generic), ckeditor5 (npm), ckeditor5 (npm), @ckeditor/ckeditor5-engine (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 27, 2026Updated Oct 27, 2026Source checked Oct 27, 2026First seen by HOL Oct 27, 2026Material review Oct 27, 2026
Upstream Advisory

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 27, 2026
References
6 linked sources
Open source record

Key facts

Risk
Low · CVSS 3.1
Exploitation
Not marked as known exploited
Affected software
7 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 3.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ckeditor/ckeditor5 (generic), ckeditor5 (npm), ckeditor5 (npm), @ckeditor/ckeditor5-engine (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ckeditor/ckeditor5generic>=29.0.0 <47.7.4 || >=48.0.0 <48.5.147.7.4, 48.5.1
ckeditor5npm>=29.0.0,<47.7.447.7.4
ckeditor5npm>=48.0.0,<48.5.148.5.1
@ckeditor/ckeditor5-enginenpm>=29.0.0,<47.7.447.7.4
@ckeditor/ckeditor5-enginenpm>=48.0.0,<48.5.148.5.1
@ckeditor/ckeditor5-enginenpm>=29.0.0,<47.7.447.7.4
@ckeditor/ckeditor5-enginenpm>=48.0.0,<48.5.148.5.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ckeditor/ckeditor5, ckeditor5, ckeditor5.
  2. 2Review the reported fix. Update ckeditor/ckeditor5 to 47.7.4; ckeditor5 to 47.7.4; ckeditor5 to 48.5.1; @ckeditor/ckeditor5-engine to 47.7.4; @ckeditor/ckeditor5-engine to 48.5.1; @ckeditor/ckeditor5-engine to 47.7.4; @ckeditor/ckeditor5-engine to 48.5.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 27, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object content. Processing that content can execute attacker-controlled JavaScript in a browser context isolated from the origin of the application embedding the editor. This issue is fixed in versions 47.7.4 and 48.5.1.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • CKEditor: Cross-site scripting (XSS) in the engine packageSame ckeditor/ckeditor5 package
  • CVE-2026-118132Also CWE-79
  • dd-trace: ReDOS in URL query string obfuscationSame npm ecosystem