CVE-2023-4779: medium-severity vulnerability in specialk User Submitted Posts – Enable Users…
User Submitted Posts – Enable Users to Submit Posts from the Front End <= 20230811 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.4%
The User Submitted Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [usp_gallery] shortcode in versions up to, and including, 20230811 due to insufficient input sanitization and output escaping on user supplied attributes like 'before'. 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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Related CVEs — specialk User Submitted Posts – Enable Users…
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CVE-2019-25138CRITICALUser Submitted Posts <= 20190312 - Unauthenticated Arbitrary File UploadEPSS 2.3%CVE-2023-4308HIGHUser Submitted Posts <= 20230809 - Unauthenticated Stored Cross-Site Scripting via 'user-submitted-content'EPSS 0.4%CVE-2026-2126MEDIUMUser Submitted Posts <= 20260113 - Incorrect Authorization to Unauthenticated Category Restriction Bypass via 'user-submitted-category' ParameterEPSS 0.4%CVE-2026-0913MEDIUMUser Submitted Posts <= 20260110 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'usp_access' ShortcodeEPSS 0.3%CVE-2026-0800HIGHUser Submitted Posts – Enable Users to Submit Posts from the Front End <= 20251210 - Unauthenticated Stored Cross-Site Scripting via Custom FieldEPSS 0.2%CVE-2026-119162HIGHUser Submitted Posts <= 20260916 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'user-submitted-content' Parameter via Block-Comment Shortcode SplittingEPSS 0.2%