How severe is CVE-2023-2528?

CVE-2023-2528 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2023-2528 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2528?

CVE-2023-2528 affects Supsystic Contact Form. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-2528?

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

When was CVE-2023-2528 published?

CVE-2023-2528 was published on 2023-05-17 and last updated on 2026-06-17.

CVE-2023-2528

CVE-2023-2528 is a medium-severity vulnerability in Supsystic Contact Form with a CVSS 3.x base score of 5.4. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Supsystic Contact Form
Published: 2023-05-17
Last modified: 2026-06-17

Description

The Contact Form by Supsystic plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.7.24. This is due to missing or incorrect nonce validation on the AJAX action handler. This makes it possible for unauthenticated attackers to execute AJAX actions via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Frequently asked questions

What is CVE-2023-2528?: The Contact Form by Supsystic plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.7.24. This is due to missing or incorrect nonce validation on the AJAX action handler. This makes it possible for unauthenticated attackers to execute AJAX actions via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
How severe is CVE-2023-2528?: CVE-2023-2528 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2023-2528 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2528?: CVE-2023-2528 affects Supsystic Contact Form. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-2528?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-2528 published?: CVE-2023-2528 was published on 2023-05-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:supsystic:contact_form:*:*:*:*:*:wordpress:*:*

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