Medium severity · published Aug 10, 2023
CVE-2023-4283
EmbedPress <= 3.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
5.4
CVSS
0.5%
EPSS
No
On KEV
Description
The EmbedPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'embedpress_calendar' shortcode in versions up to, and including, 3.8.2 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.
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)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EP
EmbedPress – PDF Embedder, Embed YouTube Videos, 3D FlipBook, Social feeds, Docs & more · wpdevteam
through 3.8.2 · source: vendor
EM
Embedpress · Wpdeveloper
through 3.8.2 · source: NVD
Affected product
EP
EmbedPress – PDF Embedder, Embed YouTube Videos, 3D FlipBook, Social feeds, Docs & more
wpdevteam
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4283
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4283
Patch
https://plugins.trac.wordpress.org/browser/embedpress/tags/3.8.2/EmbedPress/ThirdParty/Googlecalendar/Embedpress_Google_Helper.php#L522
Patch
https://plugins.trac.wordpress.org/changeset/2950211/embedpress#file18
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/b340eda1-e9d2-40b6-89f9-41d995ce3555?source=cve
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