01 Record
CVE-2021-32808
Cross-site scripting in ckeditor via abuse of undo functionality
HighPUBLISHEDCNA: GitHub_M
CNA base score7.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
02 Description
Cross-site scripting in ckeditor via abuse of undo functionality
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.19% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 67.3% of scored records. A rank, not a probability.
- NVD base score
- 5.4 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-08-12 16:25Z5 YR AGO
- Last updated
- 2024-08-03 23:33Z2 YR AGO
- Reserved
- 2021-05-12
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.6)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
- Weaknesses
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
- Data version
- 5.1
- Document digest
- 5d537b63efa8739e5bb759bfd6981f093286aaf7976e64a65114a5f4722a9638
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/ckeditor/ckeditor4/security/advisories/GHSA-6226-h7ff-ch6c
- github.comhttps://github.com/ckeditor/ckeditor4/releases/tag/4.16.2
- lists.fedoraproject.orgFEDORA-2021-51457da891https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T/
- lists.fedoraproject.orgFEDORA-2021-72176a63a8https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW/
- lists.fedoraproject.orgFEDORA-2021-87578dca12https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS2A2GDG66J7XD/
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.html
07 Fixed in
Debian 12
- ckeditor Fixed in 4.16.2+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.