How severe is CVE-2023-0538?

CVE-2023-0538 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-0538 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0538?

CVE-2023-0538 affects Campaign Url Builder Project Campaign Url Builder. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-0538?

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

When was CVE-2023-0538 published?

CVE-2023-0538 was published on 2023-03-13 and last updated on 2026-06-17.

CVE-2023-0538

CVE-2023-0538 is a medium-severity vulnerability in Campaign Url Builder Project Campaign Url Builder 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Campaign Url Builder Project Campaign Url Builder
Published: 2023-03-13
Last modified: 2026-06-17

Description

The Campaign URL Builder WordPress plugin before 1.8.2 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

Frequently asked questions

What is CVE-2023-0538?: The Campaign URL Builder WordPress plugin before 1.8.2 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks
How severe is CVE-2023-0538?: CVE-2023-0538 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-0538 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0538?: CVE-2023-0538 affects Campaign Url Builder Project Campaign Url Builder. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-0538?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-0538 published?: CVE-2023-0538 was published on 2023-03-13 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/4869fdc7-4fc7-4917-bc00-b6ced9ccc871

Affected products (1)

cpe:2.3:a:campaign_url_builder_project:campaign_url_builder:*:*:*:*:*:wordpress:*:*

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