CVE-2021-47836
MEDIUM EPSS 22.8%
Published Jan 16, 20265mo ago · Modified Jun 17, 20261w ago
5.1 CVSS 4.0
Published Jan 16, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago
Description
Markdown Explorer 0.1.1 contains a cross-site scripting vulnerability that allows attackers to inject malicious code through file uploads and editor inputs. Attackers can upload markdown files with embedded JavaScript payloads that execute in the application's privileged renderer context, allowing code execution on the host.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X
Threat Intelligence
EPSS Exploit Probability
22.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-79 Cross-site Scripting Injection
References 4
- github.com https://github.com/jersou/markdown-explorer
- imgur.com https://imgur.com/a/w4bcPWs
- exploit-db.com https://www.exploit-db.com/exploits/49826
- vulncheck.com https://www.vulncheck.com/advisories/markdown-explorer-persistent-cross-site-scripting
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.