CVE-2026-16264

The Newsletters WordPress plugin before 4.18.1 does not perform an ownership check on some of its subscriber management actions, and issues a management session to unauthenticated visitors on request, allowing attackers to read any subscriber's personal data and overwrite any subscriber's record...

PT-2026-97157

Name of the Vulnerable Software and Affected Versions Newsletters WordPress plugin versions prior to 4.18.1 Description The plugin fails to perform ownership checks on certain subscriber management actions and grants management sessions to unauthenticated visitors upon request. This allows...

CVE-2026-17520

The Newsletters WordPress plugin before 4.17 does not generate its API key using a sufficiently random source, deriving it from a publicly known value, allowing unauthenticated attackers to compute the key and perform privileged actions such as adding and deleting subscribers and sending emails,...

CVE-2026-17522

The Newsletters WordPress plugin before 4.17 does not perform any nonce or capability check when saving one of its settings screens, and writes every submitted parameter into its own options, allowing attackers to make a logged in administrator overwrite arbitrary Newsletters WordPress plugin...

CVE-2026-17522 Newsletters < 4.17 - Arbitrary Plugin Option Update via CSRF

The Newsletters WordPress plugin before 4.17 does not perform any nonce or capability check when saving one of its settings screens, and writes every submitted parameter into its own options, allowing attackers to make a logged in administrator overwrite arbitrary Newsletters WordPress plugin...

CVE-2026-17520 Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key

The Newsletters WordPress plugin before 4.17 does not generate its API key using a sufficiently random source, deriving it from a publicly known value, allowing unauthenticated attackers to compute the key and perform privileged actions such as adding and deleting subscribers and sending emails,...

CVE-2026-17522

The Newsletters WordPress plugin (versions before 4.17 ) is vulnerable to a Cross-Site Request Forgery (CSRF) attack because it fails to perform necessary nonce or capability checks when saving specific settings screens. This allows an attacker to trick a logged-in administrator into submitting a...

CVE-2026-17520 Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key

The Newsletters WordPress plugin before 4.17 does not generate its API key using a sufficiently random source, deriving it from a publicly known value, allowing unauthenticated attackers to compute the key and perform privileged actions such as adding and deleting subscribers and sending emails,...

PT-2026-83398

Name of the Vulnerable Software and Affected Versions Newsletters WordPress plugin versions prior to 4.17 Description Cross-Site Request Forgery CSRF occurs because the plugin fails to perform nonce or capability checks when saving settings screens. This allows an attacker to trick a logged-in...

CVE-2026-17522: Cross-Site Request Forgery (CSRF)

The Newsletters WordPress plugin before 4.17 does not perform any nonce or capability check when saving one of its settings screens, and writes every submitted parameter into its own options, allowing attackers to make a logged in administrator overwrite arbitrary Newsletters WordPress plugin...

PT-2026-68398

Name of the Vulnerable Software and Affected Versions Newsletters WordPress plugin versions prior to 4.16 Description An issue exists where the plugin fails to authenticate or validate bounce-processing requests before fetching a user-supplied URL on the server side. This allows unauthenticated...

CVE-2026-16268: Server-Side Request Forgery (SSRF)

The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied URL on the server side, allowing unauthenticated attackers to make the site issue requests to arbitrary internal or external hosts...

CVE-2026-12583: Deserialization of Untrusted Data

The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, wri...

CVE-2023-4797: Improper Neutralization of Special Elements used in a Command

The Newsletters WordPress plugin before 4.9.3 does not properly escape user-controlled parameters when they are appended to SQL queries and shell commands, which could enable an administrator to run arbitrary commands on the server...

CVE-2021-34634

The Nifty Newsletters WordPress plugin is vulnerable to Cross-Site Request Forgery via the solanlwphead function found in the /sola-newsletters.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 4.0.23...