No exploitation reported

CVE-2026-116688

No exploitation reported by the sources we read.

Published2026-10-27
WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes incoming style attribute values. Crafted editor content can thereby cause unauthorized JavaScript execution in the browser. This issue is fixed in versions 47.7.4 and 48.5.1.

Timeline

dates in UTC

2026-10-2720:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-28 09:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-116688?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-116688?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-116688 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CNACVSS 3.18.1read 2026-10-28
NVDweakness (CWE)CWE-79read 2026-10-28

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published: 2026-10-27
Last Modified: 2026-10-27
NVD status: Received

Frequently asked questions

What is CVE-2026-116688?

Is CVE-2026-116688 actively exploited?

Active exploitation of CVE-2026-116688 has not been confirmed.

What is the CVSS score for CVE-2026-116688?

CVE-2026-116688 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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