How severe is CVE-2021-36913?

CVE-2021-36913 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2021-36913 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36913?

CVE-2021-36913 affects Redirection-for-contact-form7 Redirection For Contact Form 7. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36913?

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-2021-36913 published?

CVE-2021-36913 was published on 2022-10-11 and last updated on 2026-06-17.

CVE-2021-36913

CVE-2021-36913 is a high-severity vulnerability in Redirection-for-contact-form7 Redirection For Contact Form 7 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. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Redirection-for-contact-form7 Redirection For Contact Form 7
Published: 2022-10-11
Last modified: 2026-06-17

Description

Unauthenticated Options Change and Content Injection vulnerability in Qube One Redirection for Contact Form 7 plugin <= 2.4.0 at WordPress allows attackers to change options and inject scripts into the footer HTML. Requires an additional extension (plugin) AccessiBe.

Frequently asked questions

What is CVE-2021-36913?: Unauthenticated Options Change and Content Injection vulnerability in Qube One Redirection for Contact Form 7 plugin <= 2.4.0 at WordPress allows attackers to change options and inject scripts into the footer HTML. Requires an additional extension (plugin) AccessiBe.
How severe is CVE-2021-36913?: CVE-2021-36913 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2021-36913 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36913?: CVE-2021-36913 affects Redirection-for-contact-form7 Redirection For Contact Form 7. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36913?: 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-2021-36913 published?: CVE-2021-36913 was published on 2022-10-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redirection-for-contact-form7:redirection_for_contact_form_7:*:*:*:*:*:wordpress:*:*

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