CVE-2023-4779

User Submitted Posts – Enable Users to Submit Posts from the Front End <= 20230811 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

CVSS 6.4 MEDIUMEPSS 0.3%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.4EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

06 Sep 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

Affected products

specialk · User Submitted Posts – Enable Users to Submit Posts from the Front End

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References

https://plugins.trac.wordpress.org/changeset/2961841 https://www.wordfence.com/threat-intel/vulnerabilities/id/d21ca709-183f-4dd1-849c-f1b2a4f7ec43?source=cve