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

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.

Published: 2022-03-16 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-24729 is rated Moderate Risk (53.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.15%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-24729

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-22 0.94% 1.15% +0.20%
2 2026-05-13 0.84% 0.94% +0.10%
3 2026-04-20 — 0.84% —

Full EPSS history (61 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-24729

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2022-24729

OS Trackers for CVE-2022-24729

vendor priority summary link
debian unimportant CVE-2022-24729 unimportant priority: Debian including 2 source packages (ckeditor, ckeditor3), 4 status rows across 2 suites (bookworm, bullseye): resolved 3, open 1. https://security-tracker.debian.org/tracker/CVE-2022-24729
ubuntu low CVE-2022-24729 low priority: Ubuntu including 4 source packages (ckeditor, ckeditor3, ldap-account-manager, request-tracker4), 56 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 31, needs-triage 11, not-affected 8, DNE 5, released 1. https://ubuntu.com/security/CVE-2022-24729

Affected software / configurations for CVE-2022-24729

Vendor Product Version Raw CPE
ckeditor ckeditor >= 4.0, < 4.18.0 cpe:2.3:a:ckeditor:ckeditor:*:*:*:*:*:*:*:*
drupal drupal >= 8.0.0, < 9.2.15 cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
drupal drupal >= 9.3.0, < 9.3.8 cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
oracle application_express < 22.1.1 cpe:2.3:a:oracle:application_express:*:*:*:*:*:*:*:*
oracle commerce_merchandising 11.3.2 cpe:2.3:a:oracle:commerce_merchandising:11.3.2:*:*:*:*:*:*:*
oracle financial_services_analytical_applications_infrastructure >= 8.0.7.0.0, <= 8.1.0.0.0 cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:*:*:*:*:*:*:*:*
oracle financial_services_analytical_applications_infrastructure 8.1.1.0 cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:8.1.1.0:*:*:*:*:*:*:*
oracle financial_services_analytical_applications_infrastructure 8.1.2.0 cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:8.1.2.0:*:*:*:*:*:*:*
oracle financial_services_analytical_applications_infrastructure 8.1.2.1 cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:8.1.2.1:*:*:*:*:*:*:*
oracle financial_services_behavior_detection_platform >= 8.1.1.0, <= 8.1.2.1 cpe:2.3:a:oracle:financial_services_behavior_detection_platform:*:*:*:*:*:*:*:*
oracle financial_services_behavior_detection_platform 8.0.7.0 cpe:2.3:a:oracle:financial_services_behavior_detection_platform:8.0.7.0:*:*:*:*:*:*:*
oracle financial_services_behavior_detection_platform 8.0.8.0 cpe:2.3:a:oracle:financial_services_behavior_detection_platform:8.0.8.0:*:*:*:*:*:*:*
oracle financial_services_trade-based_anti_money_laundering 8.0.7 cpe:2.3:a:oracle:financial_services_trade-based_anti_money_laundering:8.0.7:*:*:*:enterprise:*:*:*
oracle financial_services_trade-based_anti_money_laundering 8.0.8 cpe:2.3:a:oracle:financial_services_trade-based_anti_money_laundering:8.0.8:*:*:*:enterprise:*:*:*
oracle peoplesoft_enterprise_peopletools 8.58 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.59 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:*
fedoraproject fedora 36 cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
fedoraproject fedora 37 cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

References for CVE-2022-24729

cvelogic Threat Intelligence