CVE-2021-47842
MEDIUM EPSS 32.7%
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
StudyMD 0.3.2 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts into markdown files. Attackers can upload crafted markdown files with embedded JavaScript payloads that execute when the file is opened, potentially enabling remote code execution.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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 Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction P
Scope X
Threat Intelligence
EPSS Exploit Probability
32.7% 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/jotron/StudyMD
- imgur.com https://imgur.com/a/lDHKEIp
- exploit-db.com https://www.exploit-db.com/exploits/49832
- vulncheck.com https://www.vulncheck.com/advisories/studymd-persistent-cross-site-scripting
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.