CVE-2022-24728 [Medium] | XSS in Ckeditor

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4 prior to version 4.18.0. The vulnerability allows someone to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. This problem has been patched in version 4.18.0. There are currently no known workarounds.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-02	1.07%	0.99%	-0.08%
2	2026-04-14	0.80%	1.07%	+0.27%
3	2026-03-27	—	0.80%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-02

1.07%

0.99%

-0.08%

2026-04-14

0.80%

1.07%

+0.27%

2026-03-27

—

0.80%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.4	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N` 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:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.3	2.7	[email protected]
5.4	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N` 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:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.3	2.7	[email protected]
3.5	2.0	LOW	`AV:N/AC:M/Au:S/C:N/I:P/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:S) A single authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	6.8	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.4

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N 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:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

2.3

2.7

[email protected]

5.4

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N 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:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

2.3

2.7

[email protected]

3.5

2.0

LOW

AV:N/AC:M/Au:S/C:N/I:P/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S): A single authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:N): No availability impact.

6.8

2.9

[email protected]

OS Trackers for CVE-2022-24728

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-24728 not yet assigned priority: Debian including 2 source packages (ckeditor, ckeditor3), 4 status rows across 2 suites (bookworm, bullseye): open 3, resolved 1.	https://security-tracker.debian.org/tracker/CVE-2022-24728
`ubuntu`	medium	CVE-2022-24728 medium 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, DNE 5, needed 4, not-affected 4, released 1.	https://ubuntu.com/security/CVE-2022-24728

Affected software / configurations for CVE-2022-24728

References for CVE-2022-24728

URL	Tags
https://ckeditor.com/cke4/release/CKEditor-4.18.0	Release Notes Vendor Advisory
https://github.com/ckeditor/ckeditor4/commit/d158413449692d920a778503502dcb22881bc949	Patch Third Party Advisory
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-4fc4-4p5g-6w89	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36UZ6YTCMW6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7JJW4ZZHJP/
https://www.drupal.org/sa-core-2022-005	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html	Patch Third Party Advisory

URL

CVE-2022-24728 | Cross-site Scripting in CKEditor4

Exploit prediction scoring system (EPSS) score for CVE-2022-24728

Common vulnerability scoring system (CVSS) metrics for CVE-2022-24728

Weakness enumeration for CVE-2022-24728

GitHub Security Advisory for CVE-2022-24728

OS Trackers for CVE-2022-24728

Affected software / configurations for CVE-2022-24728

References for CVE-2022-24728

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:::::::*