How severe is CVE-2023-51374?

CVE-2023-51374 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-51374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51374?

CVE-2023-51374 affects Zerobounce Zerobounce Email Verification & Validation. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51374?

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

When was CVE-2023-51374 published?

CVE-2023-51374 was published on 2023-12-29 and last updated on 2026-06-17.

CVE-2023-51374

CVE-2023-51374 is a medium-severity vulnerability in Zerobounce Zerobounce Email Verification & Validation with a CVSS 3.x base score of 5.9. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Zerobounce Zerobounce Email Verification & Validation
Published: 2023-12-29
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ZeroBounce ZeroBounce Email Verification & Validation allows Stored XSS.This issue affects ZeroBounce Email Verification & Validation: from n/a through 1.0.11.

Frequently asked questions

What is CVE-2023-51374?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ZeroBounce ZeroBounce Email Verification & Validation allows Stored XSS.This issue affects ZeroBounce Email Verification & Validation: from n/a through 1.0.11.
How severe is CVE-2023-51374?: CVE-2023-51374 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-51374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51374?: CVE-2023-51374 affects Zerobounce Zerobounce Email Verification & Validation. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-51374 published?: CVE-2023-51374 was published on 2023-12-29 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/zerobounce/wordpress-zerobounce-email-verification-validation-plugin-1-0-11-cross-site-scripting-xss-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:zerobounce:zerobounce_email_verification_\&_validation:*:*:*:*:*:wordpress:*:*

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