CVE-2020-9440: ckeditor Cross-site Scripting
CVSS: 6.1v3.1MediumModified
AliasesUBUNTU-CVE-2020-9440
Published 10-03-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-9440 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in ckeditor. EPSS estimates a 1.31% chance of exploitation in the next 30 days, higher than 70.2% of scored vulnerabilities.
CVSS score
6.1/10
010
Medium · v3.1 (NVD)EPSS score
1.31%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 10-03-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A cross-site scripting (XSS) vulnerability in the WSC plugin through 5.5.7.5 for CKEditor 4 allows remote attackers to run arbitrary web script inside an IFRAME element by injecting a crafted HTML element into the editor.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
1.31%
Chance of exploitation in the next 30 days
Percentile
70%
Versus all other CVEs
30-day change
0.00 pp
From 1.31% on 19-09-2026
19-09-202619-10-2026
EPSS score1.31%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ckeditor1 product
- ckeditorEOL4.0
Fedoraproject1 product
- fedoraEOL30 | 31 | 32
Ubuntu1 product
- ckeditorAll versions (No fix recorded)
Webspellchecker1 product
- webspellchecker≤ 5.5.7.5
4 vendors · 4 products
References
6 links- ckeditor.com/blog/CKEditor-4.14-with-Paste-from-LibreOffice-released/X Refsource MISCREPORTVendor Advisory