How severe is CVE-2023-23816?

CVE-2023-23816 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-2023-23816 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-23816?

CVE-2023-23816 affects Sitemap Index Project Sitemap Index. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-23816?

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

When was CVE-2023-23816 published?

CVE-2023-23816 was published on 2023-04-23 and last updated on 2026-06-17.

CVE-2023-23816

CVE-2023-23816 is a medium-severity vulnerability in Sitemap Index Project Sitemap Index 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% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sitemap Index Project Sitemap Index
Published: 2023-04-23
Last modified: 2026-06-17

Description

Auth. (admin+) Cross-Site Scripting (XSS) vulnerability in Twardes Sitemap Index plugin <= 1.2.3 versions.

Frequently asked questions

What is CVE-2023-23816?: Auth. (admin+) Cross-Site Scripting (XSS) vulnerability in Twardes Sitemap Index plugin <= 1.2.3 versions.
How severe is CVE-2023-23816?: CVE-2023-23816 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-2023-23816 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-23816?: CVE-2023-23816 affects Sitemap Index Project Sitemap Index. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-23816?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-23816 published?: CVE-2023-23816 was published on 2023-04-23 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/sitemap-index/wordpress-sitemap-index-plugin-1-2-3-cross-site-scripting-xss-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:sitemap_index_project:sitemap_index:*:*:*:*:*:wordpress:*:*

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