How severe is CVE-2021-25083?

CVE-2021-25083 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-2021-25083 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25083?

CVE-2021-25083 affects Roundupwp Registrations For The Events Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25083?

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

When was CVE-2021-25083 published?

CVE-2021-25083 was published on 2022-01-24 and last updated on 2026-06-17.

CVE-2021-25083

CVE-2021-25083 is a medium-severity vulnerability in Roundupwp Registrations For The Events Calendar 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% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Roundupwp Registrations For The Events Calendar
Published: 2022-01-24
Last modified: 2026-06-17

Description

The Registrations for the Events Calendar WordPress plugin before 2.7.10 does not escape the qtype parameter before outputting it back in an attribute in the settings page, leading to a Reflected Cross-Site Scripting

Frequently asked questions

What is CVE-2021-25083?: The Registrations for the Events Calendar WordPress plugin before 2.7.10 does not escape the qtype parameter before outputting it back in an attribute in the settings page, leading to a Reflected Cross-Site Scripting
How severe is CVE-2021-25083?: CVE-2021-25083 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-2021-25083 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25083?: CVE-2021-25083 affects Roundupwp Registrations For The Events Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25083?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25083 published?: CVE-2021-25083 was published on 2022-01-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:roundupwp:registrations_for_the_events_calendar:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Roundupwp Registrations For The Events Calendar

CVE-2021-24943 — Critical (CVSS 9.8): The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and escape the event_id in…
CVE-2024-7982 — Critical (CVSS 9.6): The Registrations for the Events Calendar WordPress plugin before 2.12.4 does not sanitise and escape some parameters…
CVE-2024-39638 — High (CVSS 8.5): Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Roundup WP…
CVE-2024-10703 — Medium (CVSS 6.1): The Registrations for the Events Calendar WordPress plugin before 2.13.4 does not sanitise and escape some of its…
CVE-2021-24876 — Medium (CVSS 6.1): The Registrations for the Events Calendar WordPress plugin before 2.7.5 does not escape the v parameter before…

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