01 Record
CVE-2026-124491
SunEditor before 3.4.0 Stored XSS via FileUpload Plugin Filename
MediumPUBLISHEDCNA: VulnCheck
CNA base score5.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
02 Description
SunEditor before 3.4.0 Stored XSS via FileUpload Plugin Filename
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
- Not scored by EPSS
- EPSS percentile
- Not scored by EPSS
- NVD base score
- 5.3 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVD analysis status
- Received. NVD last modified this record on 2026-11-08.
- 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
- 2026-11-08 13:16Z2 HR AGO
- Last updated
- 2026-11-08 13:16Z2 HR AGO
- Reserved
- 2026-11-08
- Assigning CNA
- VulnCheck
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- Weaknesses
- CWE-79Improper Neutralization of Input During Web Page GenerationBase
- Data version
- 5.2
- Document digest
- 6e196170dba1cf0c1f0efc1563e30c9c7974d9730fae1e3cf8b3d1fbee24699e
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comGitHub Security Advisory (GHSA-2w4v-r3v4-f5h4)https://github.com/JiHong88/suneditor/security/advisories/GHSA-2w4v-r3v4-f5h4
- www.vulncheck.comVulnCheck Advisory: SunEditor before 3.4.0 Stored XSS via FileUpload Plugin Filenamehttps://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-fileupload-plugin-filename