How severe is CVE-2025-22303?

CVE-2025-22303 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 low, integrity none, and availability none.

Is CVE-2025-22303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-22303?

CVE-2025-22303 affects Wpmailster Wp Mailster. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-22303?

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

Does CVE-2025-22303 have an EU (EUVD) identifier?

Yes. CVE-2025-22303 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2703.

When was CVE-2025-22303 published?

CVE-2025-22303 was published on 2025-01-07 and last updated on 2026-06-17.

CVE-2025-22303

CVE-2025-22303 is a medium-severity vulnerability in Wpmailster Wp Mailster 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-201.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2703
Weakness: CWE-201
Affected product: Wpmailster Wp Mailster
Published: 2025-01-07
Last modified: 2026-06-17

Description

Insertion of Sensitive Information Into Sent Data vulnerability in brandtoss WP Mailster wp-mailster allows Retrieve Embedded Sensitive Data.This issue affects WP Mailster: from n/a through <= 1.8.17.0.

Frequently asked questions

What is CVE-2025-22303?: Insertion of Sensitive Information Into Sent Data vulnerability in brandtoss WP Mailster wp-mailster allows Retrieve Embedded Sensitive Data.This issue affects WP Mailster: from n/a through <= 1.8.17.0.
How severe is CVE-2025-22303?: CVE-2025-22303 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 low, integrity none, and availability none.
Is CVE-2025-22303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-22303?: CVE-2025-22303 affects Wpmailster Wp Mailster. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-22303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-22303 have an EU (EUVD) identifier?: Yes. CVE-2025-22303 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2703.
When was CVE-2025-22303 published?: CVE-2025-22303 was published on 2025-01-07 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/wp-mailster/vulnerability/wordpress-wp-mailster-plugin-1-8-17-0-sensitive-data-exposure-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:wpmailster:wp_mailster:*:*:*:*:*:wordpress:*:*

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