CVE-2023-4772
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.
Does this matter?
Lower severity and a low EPSS score (0.51%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.51% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- thenewsletterplugin/newsletter
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/newsletter/tags/7.8.9/subscription/subscription.php#L1653Product
- https://plugins.trac.wordpress.org/changeset/2955097/newsletter#file21Patch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/87da5300-1add-44fc-a3e0-e8912f946c84?source=cvePatch, Third Party Advisory
- https://plugins.trac.wordpress.org/browser/newsletter/tags/7.8.9/subscription/subscription.php#L1653Product
- https://plugins.trac.wordpress.org/changeset/2955097/newsletter#file21Patch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/87da5300-1add-44fc-a3e0-e8912f946c84?source=cvePatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.