How severe is CVE-2021-24280?

CVE-2021-24280 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24280 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24280?

CVE-2021-24280 affects Querysol Redirection For Contact Form 7. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24280?

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-2021-24280 published?

CVE-2021-24280 was published on 2021-05-14 and last updated on 2026-06-17.

CVE-2021-24280

CVE-2021-24280 is a high-severity vulnerability in Querysol Redirection For Contact Form 7 with a CVSS 3.x base score of 8.8. 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-502.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Querysol Redirection For Contact Form 7
Published: 2021-05-14
Last modified: 2026-06-17

Description

In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber, could use the import_from_debug AJAX action to inject PHP objects.

Frequently asked questions

What is CVE-2021-24280?: In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber, could use the import_from_debug AJAX action to inject PHP objects.
How severe is CVE-2021-24280?: CVE-2021-24280 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24280 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24280?: CVE-2021-24280 affects Querysol Redirection For Contact Form 7. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24280?: 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-2021-24280 published?: CVE-2021-24280 was published on 2021-05-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:querysol:redirection_for_contact_form_7:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Querysol Redirection For Contact Form 7

CVE-2021-24278 — High (CVSS 7.5): In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, unauthenticated users can use the wpcf7r_get_nonce…
CVE-2021-24279 — Medium (CVSS 6.5): In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, low level users, such as subscribers, could use…
CVE-2021-24282 — Medium (CVSS 6.3): In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber,…
CVE-2021-24281 — Medium (CVSS 4.3): In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber,…

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