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CVE-2020-9281

23
FAUCET Score

CVE-2020-9281 describes a cross-site scripting (XSS) vulnerability in the HTML Data Processor of CKEditor 4.0 through 4.13, impacting products like Drupal, FedoraProject, and Oracle. This medium-severity flaw (CVSS 6.1) allows remote attackers to inject arbitrary web scripts via a specially crafted "protected" comment, requiring user interaction but with low attack complexity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0, < 4.14CPE matchmatch criteria
cpe:2.3:a:ckeditor:ckeditor:*:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
>= 8.7.0, < 8.7.12CPE matchmatch criteria
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.33%
Probability of exploitation in next 30 days
EPSS Percentile
90.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0433 is in the 96th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: ckeditor4Fixed in: 4.14.0
oraclepatch availablevia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-vcjf-mgcg-jxjqmedium

CKEditor 4.0 vulnerability in the HTML Data Processor

May 7, 2021

References

github.com / ckeditor/ckeditor4
ProductThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/7OJ4BSS3VEAEXPNSOOUAXX6RDNECGZNO
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/L322YA73LCV3TO7ORY45WQDAFJVNKXBE
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/M4HHYQ6N452XTCIROFMJOTYEUWSB6FR4
oracle.com / security-alerts/cpuApr2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchVendor Advisory
oracle.com / security-alerts/cpuoct2020.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2021.html
Not ApplicableThird Party Advisory