How severe is GHSA-q9w4-w667-qqj4?

GHSA-q9w4-w667-qqj4 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-q9w4-w667-qqj4?

GHSA-q9w4-w667-qqj4 affects the following packages: ckeditor-wordcount-plugin (npm). Ecosystems affected: npm.

How do I fix GHSA-q9w4-w667-qqj4?

Update ckeditor-wordcount-plugin to 1.17.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q9w4-w667-qqj4 is resolved across your whole dependency graph.

How do I detect GHSA-q9w4-w667-qqj4 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ckeditor-wordcount-plugin. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-q9w4-w667-qqj4 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-q9w4-w667-qqj4?

O3 pinpoints whether GHSA-q9w4-w667-qqj4 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-q9w4-w667-qqj4 actively exploited in the wild?

No public exploit code has been indexed for GHSA-q9w4-w667-qqj4 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-q9w4-w667-qqj4?

GHSA-q9w4-w667-qqj4 has an EPSS (Exploit Prediction Scoring System) score of 0.5%, placing it in the 38th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-q9w4-w667-qqj4?

GHSA-q9w4-w667-qqj4 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-q9w4-w667-qqj4 published, and has it been updated?

GHSA-q9w4-w667-qqj4 was published on July 10, 2023 and was last updated on February 4, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-q9w4-w667-qqj4: ckeditor-wordcount-plugin Cross-Site Scrip…

EPSS Exploitation Probability

via FIRST.org ↗

0.5%probability of exploitation in next 30 days

Lower Risk38th percentile-0.14%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

📦ckeditor-wordcount-plugin

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.

Description

Problem

It has been discovered that the ckeditor-wordcount-plugin plugin for CKEditor4 is susceptible to cross-site scripting when switching to the source code mode.

Solution

Update to version 1.17.12 of the ckeditor-wordcount-plugin plugin.

Credits

@sypets for reporting this finding to the TYPO3 Security Team
@ohader for fixing the issue on behalf of the TYPO3 Security Team

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`ckeditor-wordcount-plugin`	all versions	1.17.12

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ckeditor-wordcount-plugin. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update ckeditor-wordcount-plugin to 1.17.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q9w4-w667-qqj4 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-q9w4-w667-qqj4 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-q9w4-w667-qqj4. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Problem It has been discovered that the `ckeditor-wordcount-plugin` plugin for CKEditor4 is susceptible to cross-site scripting when switching to the source code mode. ### Solution Update to version 1.17.12 of the `ckeditor-wordcount-plugin` plugin. ### Credits * @sypets for reporting this finding to the TYPO3 Security Team * @ohader for fixing the issue on behalf of the TYPO3 Security Team

O3 Security · Impact-Aware SCA

Is GHSA-q9w4-w667-qqj4 in your dependencies?

O3 detects GHSA-q9w4-w667-qqj4 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

GHSA-q9w4-w667-qqj4