Medium severity · published Sep 7, 2023
CVE-2023-4772
Newsletter <= 7.8.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
5.4
CVSS
0.5%
EPSS
No
On KEV
Description
The Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'newsletter_form' shortcode in versions up to, and including, 7.8.9 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
NS
Newsletter – Send awesome emails from WordPress · satollo
through 7.8.9 · source: vendor
NE
Newsletter · Thenewsletterplugin
through 7.8.9 · source: NVD
Affected product
NS
Newsletter – Send awesome emails from WordPress
satollo
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4772
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4772
Product
https://plugins.trac.wordpress.org/browser/newsletter/tags/7.8.9/subscription/subscription.php#L1653
Patch
https://plugins.trac.wordpress.org/changeset/2955097/newsletter#file21
Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/87da5300-1add-44fc-a3e0-e8912f946c84?source=cve
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