NVD / CVE Program· CNA GitHub_M

CVE-2022-24729: Regular expression Denial of Service in dialog plugin

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 2.4% (FIRST EPSS); higher than 84.5% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: ckeditor (Debian:12) 4.19.0+dfsg-1; ckeditor4 (npm) 4.18.0; drupal/core (Packagist) 9.2.15, 9.3.8.

Low priority for now. Upgrade to ckeditor (Debian:12) 4.19.0+dfsg-1; ckeditor4 (npm) 4.18.0; drupal/core (Packagist) 9.2.15, 9.3.8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. CKEditor4 prior to version 4.18.0 contains a vulnerability in the `dialog` plugin. The vulnerability allows abuse of a dialog input validator regular expression, which can cause a significant performance drop resulting in a browser tab freeze. A patch is available in version 4.18.0. There are currently no known workarounds.

HighCVSS 7.5 · v3.1—No exploit Fix available

Published: Mar 16, 2022
Updated: Jun 17, 2026
EPSS: 2.4% · 84th percentile
CWE: CWE-400

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.4%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 7.5
CNA · GitHub_M: 6.5; 1.0 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
ckeditor	ckeditor	cpe:2.3:a:ckeditor:ckeditor
drupal	drupal	cpe:2.3:a:drupal:drupal
oracle	application express	cpe:2.3:a:oracle:application_express
oracle	commerce merchandising	cpe:2.3:a:oracle:commerce_merchandising
oracle	financial services analytical applications infrastructure	cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure
oracle	financial services behavior detection platform	cpe:2.3:a:oracle:financial_services_behavior_detection_platform
oracle	financial services trade-based anti money laundering	cpe:2.3:a:oracle:financial_services_trade-based_anti_money_laundering
oracle	peoplesoft enterprise peopletools	cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools
fedoraproject	fedora	cpe:2.3:o:fedoraproject:fedora

Is the CKEditor 4 on your site affected?

The free JavaScript library scanner reads the CKEditor 4 version from the files your site loads, matches this record and other known vulnerabilities, and gives the safe version on the same branch. If the version can't be read, it says so. No account needed.

Scan JavaScript libraries

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

ckeditor ckeditor4.0 and later · before 4.18.0
drupal drupal8.0.0 and later · before 9.2.15
drupal drupal9.3.0 and later · before 9.3.8
fedoraproject fedora36
fedoraproject fedora37
oracle application expressbefore 22.1.1
oracle commerce merchandising11.3.2
oracle financial services analytical applications infrastructure8.0.7.0.0 and later · up to 8.1.0.0.0 inclusive
oracle financial services analytical applications infrastructure8.1.1.0
oracle financial services analytical applications infrastructure8.1.2.0
oracle financial services analytical applications infrastructure8.1.2.1
oracle financial services behavior detection platform8.1.1.0 and later · up to 8.1.2.1 inclusive
oracle financial services behavior detection platform8.0.7.0
oracle financial services behavior detection platform8.0.8.0
oracle financial services trade-based anti money laundering8.0.7
oracle financial services trade-based anti money laundering8.0.8
oracle peoplesoft enterprise peopletools8.58
oracle peoplesoft enterprise peopletools8.59

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

ckeditor ckeditor4
- < 4.18.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	ckeditor	before 4.19.0+dfsg-1	4.19.0+dfsg-1
npm	ckeditor4	before 4.18.0	4.18.0
Packagist	drupal/core	from 8.0.0 · before 9.2.15	9.2.15
Packagist	drupal/core	from 9.3.0 · before 9.3.8	9.3.8

Same product

ckeditor: all records

Other highest-scoring records for the same primary product.

CVE-2023-31541A unrestricted file upload vulnerability was discovered in the ‘Browse and upload images’ feature of the CKEditor v1.2.3 plugin for Redmine,
39Monitor
CVE-2011-4972hook_file_download in the CKEditor module 7.x-1.4 for Drupal does not properly restrict access to private files, which allows remote attacke
31Monitor
CVE-2021-26272It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted URL-like text into the
27Monitor

Published before and after this one in the same product

← EarlierCVE-2021-41165Nov 17, 2021 · HTML comments vulnerability allowing to execute JavaScript code
21Monitor
← EarlierCVE-2022-24728Mar 16, 2022 · Cross-site Scripting in CKEditor4
21Monitor
Later →CVE-2022-48110Feb 13, 2023 · CKSource CKEditor 5 35.4.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the Full Featured CKEditor5 widget.
25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
debian:ckeditor	4.19.0+dfsg-1 · Debian:12	Package registry (OSV)
npm:ckeditor4	4.18.0	Package registry (OSV)
Packagist:drupal/core	9.2.15	Package registry (OSV)
Packagist:drupal/core	9.3.8	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1function expand(node) {
2  return node.children.map(expand);
3}

Fixed

1const MAX_DEPTH = 32;
2function expand(node, depth = 0) {
3  if (depth > MAX_DEPTH) throw new Error("too deep");
4  return node.children.map((c) => expand(c, depth + 1));
5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Endpoint Denial of ServiceT1499

Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

For records you follow, these changes also arrive as notifications. →

References

ckeditor.com/cke4/release/CKEditor-4.18.0

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records