XSS in Dynalon Mdwiki
CVE-2017-20239
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Dynalon Mdwiki — versions 0.6.2
Weakness classification (CWE)
References
- ExploitDB-46097 (Exploit, exploit, VDB Entry)
- VulnCheck Advisory: MDwiki Cross-Site Scripting via Location Hash Parameter (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2017-20239?
- CVE-2017-20239 is a medium-severity vulnerability in Dynalon Mdwiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-12.
- How severe is CVE-2017-20239?
- Medium severity. CVSS v3 base score is 6.1 out of 10.