How severe is CVE-2017-20239?

CVE-2017-20239 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-20239 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-20239?

CVE-2017-20239 affects Dynalon Mdwiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-20239?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2017-20239 have an EU (EUVD) identifier?

Yes. CVE-2017-20239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18965.

When was CVE-2017-20239 published?

CVE-2017-20239 was published on 2026-04-12 and last updated on 2026-06-17.

CVE-2017-20239

CVE-2017-20239 is a medium-severity vulnerability in Dynalon Mdwiki with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.1
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2017-18965
Weakness: CWE-79
Affected product: Dynalon Mdwiki
Published: 2026-04-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-20239?: CVE-2017-20239 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-20239 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-20239?: CVE-2017-20239 affects Dynalon Mdwiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-20239?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2017-20239 have an EU (EUVD) identifier?: Yes. CVE-2017-20239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18965.
When was CVE-2017-20239 published?: CVE-2017-20239 was published on 2026-04-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dynalon:mdwiki:0.6.2:*:*:*:*:*:*:*

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