How severe is CVE-2020-36956?

CVE-2020-36956 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-36956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2020-36956?

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

Does CVE-2020-36956 have an EU (EUVD) identifier?

Yes. CVE-2020-36956 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30850.

When was CVE-2020-36956 published?

CVE-2020-36956 was published on 2026-01-26 and last updated on 2026-06-17.

CVE-2020-36956

CVE-2020-36956 is a medium-severity vulnerability with a CVSS 3.x base score of 6.4. 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 6.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30850
Weakness: CWE-79
Published: 2026-01-26
Last modified: 2026-06-17

Description

Openfire 4.6.0 contains a stored cross-site scripting vulnerability in the nodejs plugin that allows attackers to inject malicious scripts through the 'path' parameter. Attackers can craft a payload with script tags to execute arbitrary JavaScript in the context of administrative users viewing the nodejs configuration page.

Frequently asked questions

What is CVE-2020-36956?: Openfire 4.6.0 contains a stored cross-site scripting vulnerability in the nodejs plugin that allows attackers to inject malicious scripts through the 'path' parameter. Attackers can craft a payload with script tags to execute arbitrary JavaScript in the context of administrative users viewing the nodejs configuration page.
How severe is CVE-2020-36956?: CVE-2020-36956 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-36956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2020-36956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2020-36956 have an EU (EUVD) identifier?: Yes. CVE-2020-36956 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30850.
When was CVE-2020-36956 published?: CVE-2020-36956 was published on 2026-01-26 and last updated on 2026-06-17.

References

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

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CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

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