How severe is CVE-2020-36993?

CVE-2020-36993 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-36993 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-36993?

CVE-2020-36993 affects Limesurvey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-36993?

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

Does CVE-2020-36993 have an EU (EUVD) identifier?

Yes. CVE-2020-36993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30901.

When was CVE-2020-36993 published?

CVE-2020-36993 was published on 2026-01-28 and last updated on 2026-06-17.

CVE-2020-36993

CVE-2020-36993 is a medium-severity vulnerability in Limesurvey with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30901
Weakness: CWE-79
Affected product: Limesurvey
Published: 2026-01-28
Last modified: 2026-06-17

Description

LimeSurvey 4.3.10 contains a stored cross-site scripting vulnerability in the Survey Menu functionality of the administration panel. Attackers can inject malicious SVG scripts through the Surveymenu[title] and Surveymenu[parent_id] parameters to execute arbitrary JavaScript in administrative contexts.

Frequently asked questions

What is CVE-2020-36993?: LimeSurvey 4.3.10 contains a stored cross-site scripting vulnerability in the Survey Menu functionality of the administration panel. Attackers can inject malicious SVG scripts through the Surveymenu[title] and Surveymenu[parent_id] parameters to execute arbitrary JavaScript in administrative contexts.
How severe is CVE-2020-36993?: CVE-2020-36993 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-36993 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-36993?: CVE-2020-36993 affects Limesurvey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-36993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2020-36993 have an EU (EUVD) identifier?: Yes. CVE-2020-36993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30901.
When was CVE-2020-36993 published?: CVE-2020-36993 was published on 2026-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:limesurvey:limesurvey:*:*:*:*:*:*:*:*

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