How severe is CVE-2023-4636?

CVE-2023-4636 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-4636 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4636?

CVE-2023-4636 affects Userprivatefiles Wordpress File Sharing Plugin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4636?

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

When was CVE-2023-4636 published?

CVE-2023-4636 was published on 2023-09-05 and last updated on 2026-06-17.

CVE-2023-4636

CVE-2023-4636 is a medium-severity vulnerability in Userprivatefiles Wordpress File Sharing Plugin with a CVSS 3.x base score of 4.4. 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 4.4)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Userprivatefiles Wordpress File Sharing Plugin
Published: 2023-09-05
Last modified: 2026-06-17

Description

The WordPress File Sharing Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Frequently asked questions

What is CVE-2023-4636?: The WordPress File Sharing Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 2.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
How severe is CVE-2023-4636?: CVE-2023-4636 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-4636 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4636?: CVE-2023-4636 affects Userprivatefiles Wordpress File Sharing Plugin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4636?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4636 published?: CVE-2023-4636 was published on 2023-09-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:userprivatefiles:wordpress_file_sharing_plugin:*:*:*:*:*:wordpress:*:*

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