How severe is CVE-2023-4372?

CVE-2023-4372 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-4372 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4372?

CVE-2023-4372 affects Litespeedtech Litespeed Cache. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4372?

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

Does CVE-2023-4372 have an EU (EUVD) identifier?

Yes. CVE-2023-4372 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54236.

When was CVE-2023-4372 published?

CVE-2023-4372 was published on 2024-01-11 and last updated on 2026-06-17.

CVE-2023-4372

CVE-2023-4372 is a medium-severity vulnerability in Litespeedtech Litespeed Cache with a CVSS 3.x base score of 6.4. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-54236
Weakness: CWE-79
Affected product: Litespeedtech Litespeed Cache
Published: 2024-01-11
Last modified: 2026-06-17

Description

The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'esi' shortcode in versions up to, and including, 5.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Frequently asked questions

What is CVE-2023-4372?: The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'esi' shortcode in versions up to, and including, 5.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
How severe is CVE-2023-4372?: CVE-2023-4372 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-4372 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4372?: CVE-2023-4372 affects Litespeedtech Litespeed Cache. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4372?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-4372 have an EU (EUVD) identifier?: Yes. CVE-2023-4372 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54236.
When was CVE-2023-4372 published?: CVE-2023-4372 was published on 2024-01-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:litespeedtech:litespeed_cache:*:*:*:*:*:wordpress:*:*

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