How severe is CVE-2021-24916?

CVE-2021-24916 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-24916 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24916?

CVE-2021-24916 affects Themeum Qubely. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24916?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-24916 published?

CVE-2021-24916 was published on 2023-08-07 and last updated on 2026-06-17.

CVE-2021-24916

CVE-2021-24916 is a high-severity vulnerability in Themeum Qubely with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Themeum Qubely
Published: 2023-08-07
Last modified: 2026-06-17

Description

The Qubely WordPress plugin before 1.8.6 allows unauthenticated user to send arbitrary e-mails to arbitrary addresses via the qubely_send_form_data AJAX action.

Frequently asked questions

What is CVE-2021-24916?: The Qubely WordPress plugin before 1.8.6 allows unauthenticated user to send arbitrary e-mails to arbitrary addresses via the qubely_send_form_data AJAX action.
How severe is CVE-2021-24916?: CVE-2021-24916 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-24916 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24916?: CVE-2021-24916 affects Themeum Qubely. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24916?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-24916 published?: CVE-2021-24916 was published on 2023-08-07 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/93b893be-59ad-4500-8edb-9fa7a45304d5

Affected products (1)

cpe:2.3:a:themeum:qubely:*:*:*:*:*:wordpress:*:*

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