CVE-2017-20239

MEDIUM 6.1CVE-2017-20239 · Published 12/04/2026 · updated 17/06/2026

In short

CVE-2017-20239 is a MEDIUM (CVSS 6.1) vulnerability affecting mdwiki (dynalon).
Chance of exploitation in the next 30 days (EPSS): 0.27%, higher than 18.6% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
mdwiki dynalon	`= 0.6.2`	No fix yet

Description

MDwiki contains a cross-site scripting vulnerability that allows remote attackers to execute arbitrary JavaScript by injecting malicious code through the location hash parameter. Attackers can craft URLs with JavaScript payloads in the hash fragment that are parsed and rendered without sanitization, causing the injected scripts to execute in the victim's browser context.

References

exploit-db.com/exploits/46097 · Exploit
vulncheck.com/advisories/mdwiki-cross-site-scripting-via-location-hash-parameter · Third Party Advisory

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