Enhanced Image plugin for CKEditor is vulnerable to Cross-site scripting (XSS)

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.1 · CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

• CVE-2018-9861: 1.72% estimated exploitation activity in the next 30 days; percentile 77.49 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

The Enhanced Image (aka image2) plugin for CKEditor in versions 4.5.10 through 4.9.1; fixed in 4.9.2, and as used in Drupal 8 before 8.4.7 and 8.5.x before 8.5.2 and other products, is vulnerable to cross-site scripting because it allows remote attackers to inject arbitrary web script through a crafted IMG element.

Published by the source

14 May 2022, 00:56 UTC

Last modified by the source

10 Dec 2025, 23:41 UTC

Source last checked

26 Oct 2026, 12:30 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-g78h-pf65-46rv

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-g78h-pf65-46rv

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# Patch Next advisory brief: CVE-2018-9861

Advisory: Enhanced Image plugin for CKEditor is vulnerable to Cross-site scripting (XSS)
IDs: CVE-2018-9861, GHSA-g78h-pf65-46rv
Record: https://patchnext.com/advisories/cve-2018-9861 (revision 2, source checked 26 Oct 2026, 12:30 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: drupal/core 8.5.2, 8.4.7; drupal/drupal 8.5.2, 8.4.7; ckeditor-dev 4.9.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist drupal/core: affected >= 8.0, < 8.4.7; >= 8.5.0, < 8.5.2; fixed in 8.5.2, 8.4.7
- Packagist drupal/drupal: affected >= 8.0, < 8.4.7; >= 8.5, < 8.5.2; fixed in 8.5.2, 8.4.7
- npm ckeditor-dev: affected >= 4.5.10, < 4.9.2; fixed in 4.9.2

## Suggested inspection (read-only)
- Packagist drupal/core: check the installed version with your package manager.
- Packagist drupal/drupal: check the installed version with your package manager.
- `npm ls ckeditor-dev --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on drupal/core, drupal/drupal, ckeditor-dev.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-g78h-pf65-46rv (OSV record GHSA-g78h-pf65-46rv lists affected ranges: Packagist drupal/core >=8.5.0 =8.0 =8.0.0-beta10 =8.0.0-beta11 =8.0.0-beta12 =8.0.0-beta13 =8.0.0-beta14 =8.0.0-beta15 =8.0.0-beta16 =8.0.0-beta6 =8.0.0-beta7 =8.0.0-beta8 =8.0.0-beta9 =8.0.0-rc1 =8.0.0-rc2…)
- Verified: https://github.com/advisories/GHSA-g78h-pf65-46rv (GitHub-reviewed advisory GHSA-g78h-pf65-46rv lists affected ranges: Packagist drupal/core >=8.0 =8.5.0 =4.5.10 =8.0 =8.5 <8.5.2)

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