Is CVE-2023-5098 in the CISA KEV catalog?

No. CVE-2023-5098 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-5098?

CVE-2023-5098 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2023-5098?

CVE-2023-5098 has an EPSS score of 0.58% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-5098?

Upgrade campaign monitor optin cat to 2.5.6 or later.

CVE & CISA-KEV Catalog

CVE-2023-5098

HIGH

8.1

CVSS v3

NVD

Description

The Campaign Monitor Forms by Optin Cat WordPress plugin before 2.5.6 does not prevent users with low privileges (like subscribers) from overwriting any options on a site with the string "true", which could lead to a variety of outcomes, including DoS.

How to fix

Remediation Available

campaign monitor optin catNVD

Affected:< 2.5.6Fixed in:2.5.6CVE-2023-5098derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploit Intelligence

0.58%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Exploit1

wpscan.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-23.