How severe is CVE-2020-21993?

CVE-2020-21993 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-2020-21993 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-21993?

CVE-2020-21993 primarily affects Wems Enterprise Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-21993?

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

When was CVE-2020-21993 published?

CVE-2020-21993 was published on 2021-04-28 and last updated on 2026-06-17.

CVE-2020-21993

CVE-2020-21993 is a medium-severity vulnerability in Wems Enterprise Manager 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 v2: 4.3
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Wems Enterprise Manager
Published: 2021-04-28
Last modified: 2026-06-17

Description

In WEMS Limited Enterprise Manager 2.58, input passed to the GET parameter 'email' is not properly sanitized before being returned to the user. This can be exploited to execute arbitrary HTML code in a user's browser session in context of an affected site.

Frequently asked questions

What is CVE-2020-21993?: In WEMS Limited Enterprise Manager 2.58, input passed to the GET parameter 'email' is not properly sanitized before being returned to the user. This can be exploited to execute arbitrary HTML code in a user's browser session in context of an affected site.
How severe is CVE-2020-21993?: CVE-2020-21993 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-2020-21993 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-21993?: CVE-2020-21993 primarily affects Wems Enterprise Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-21993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-21993 published?: CVE-2020-21993 was published on 2021-04-28 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:wems:enterprise_manager:2.19.7959:*:*:*:*:*:*:*
cpe:2.3:a:wems:enterprise_manager:2.55.8782:*:*:*:*:*:*:*
cpe:2.3:a:wems:enterprise_manager:2.55.8806:*:*:*:*:*:*:*
cpe:2.3:a:wems:enterprise_manager:2.58.8903:*:*:*:*:*:*:*

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