How severe is CVE-2024-3961?

CVE-2024-3961 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-3961 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-3961?

CVE-2024-3961 affects Convertkit Convertkit - Email Marketing, Email Newsletter And Landing Pages. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-3961?

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

Does CVE-2024-3961 have an EU (EUVD) identifier?

Yes. CVE-2024-3961 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32527.

When was CVE-2024-3961 published?

CVE-2024-3961 was published on 2024-06-21 and last updated on 2026-06-17.

CVE-2024-3961

CVE-2024-3961 is a medium-severity vulnerability in Convertkit Convertkit - Email Marketing, Email Newsletter And Landing Pages with a CVSS 3.x base score of 5.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-32527
Weakness: CWE-862
Affected product: Convertkit Convertkit - Email Marketing, Email Newsletter And Landing Pages
Published: 2024-06-21
Last modified: 2026-06-17

Description

The ConvertKit – Email Newsletter, Email Marketing, Subscribers and Landing Pages plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the tag_subscriber function in all versions up to, and including, 2.4.9. This makes it possible for unauthenticated attackers to subscribe users to tags. Financial damages may occur to site owners if their API quota is exceeded.

Frequently asked questions

What is CVE-2024-3961?: The ConvertKit – Email Newsletter, Email Marketing, Subscribers and Landing Pages plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the tag_subscriber function in all versions up to, and including, 2.4.9. This makes it possible for unauthenticated attackers to subscribe users to tags. Financial damages may occur to site owners if their API quota is exceeded.
How severe is CVE-2024-3961?: CVE-2024-3961 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-3961 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-3961?: CVE-2024-3961 affects Convertkit Convertkit - Email Marketing, Email Newsletter And Landing Pages. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-3961?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-3961 have an EU (EUVD) identifier?: Yes. CVE-2024-3961 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-32527.
When was CVE-2024-3961 published?: CVE-2024-3961 was published on 2024-06-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:convertkit:convertkit_-_email_marketing\,_email_newsletter_and_landing_pages:*:*:*:*:*:wordpress:*:*

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