How severe is CVE-2020-21517?

CVE-2020-21517 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-2020-21517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-21517?

CVE-2020-21517 affects Metinfo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-21517?

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

When was CVE-2020-21517 published?

CVE-2020-21517 was published on 2021-06-21 and last updated on 2026-07-09.

CVE-2020-21517

CVE-2020-21517 is a medium-severity vulnerability in Metinfo 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% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Metinfo
Published: 2021-06-21
Last modified: 2026-07-09

Description

Cross Site Scripting (XSS) vulnerability in MetInfo 7.0.0 via the gourl parameter in login.php.

Frequently asked questions

What is CVE-2020-21517?: Cross Site Scripting (XSS) vulnerability in MetInfo 7.0.0 via the gourl parameter in login.php.
How severe is CVE-2020-21517?: CVE-2020-21517 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-2020-21517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-21517?: CVE-2020-21517 affects Metinfo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-21517?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-21517 published?: CVE-2020-21517 was published on 2021-06-21 and last updated on 2026-07-09.

References

Affected products (1)

cpe:2.3:a:metinfo:metinfo:7.0.0:-:*:*:*:*:*:*

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