Medium severity · published Sep 6, 2023
CVE-2023-4779
User Submitted Posts – Enable Users to Submit Posts from the Front End <= 20230811 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
5.4
CVSS
0.4%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
US
User Submitted Posts – Enable Users to Submit Posts from the Front End · specialk
through 20230811 · source: vendor
US
User Submitted Posts · Plugin-planet
through 20230811 · source: NVD
Affected product
US
User Submitted Posts – Enable Users to Submit Posts from the Front End
specialk
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4779
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4779
Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2961841
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/d21ca709-183f-4dd1-849c-f1b2a4f7ec43?source=cve
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