VulnerabilityDeferred
CVE-2021-47839
Marky 0.0.1 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts into markdown files.
MEDIUM 5.1EPSS 0.44%
Does this matter?
Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.
Description
Marky 0.0.1 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 4.0
- 5.1 MEDIUMCVSS: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/M
- EPSS
- 0.44% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- disclosure@vulncheck.com
References
- https://github.com/vesparny/marky
- https://imgur.com/a/qclfrUx
- https://www.exploit-db.com/exploits/49831
- https://www.vulncheck.com/advisories/marky-persistent-cross-site-scripting
- https://access.redhat.com/security/cve/CVE-2021-47839
- https://bugzilla.redhat.com/show_bug.cgi?id=2430451
- https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47839.json
- https://www.vulncheck.com/advisories/marky-persistent-cross-site-scripting
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.