CVE-2026-49400

October CMS (System module) prior to v3.7.17 and v4.2.21 is affected by a PHP object injection vulnerability in the backend SessionMaker trait, which stored widget session state as base64(serialize(...)) and deserialized it with unserialize() without an allowed_classes restriction. Exploitation r...

October CMS: PHP Object Injection via Backend Widget Session Storage

The backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could write to a widget. session key with attacker-controlled bytes could trigger PHP object injection the next time the widg...

GHSA-2FF2-MX52-Q8WP October CMS: PHP Object Injection via Backend Widget Session Storage

The backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could write to a widget. session key with attacker-controlled bytes could trigger PHP object injection the next time the widg...

Wordfence Argus Identifies Two Critical Unauthenticated Vulnerability Chains Leading to Remote Code Execution in The Events Calendar Plugin

On August 21 and August 22, 2026, Wordfence Argus, created by the Wordfence Threat Intelligence team, identified two independent critical vulnerability chains in The Events Calendar, a WordPress plugin active on more than 600,000 websites. Both chains begin in the plugin's widget-rendering pipeli...

EUVD-2026-77617

Laravel MagicLink creates links for authentication without a password or for accessing private content. From 2.0.0 until 2.25.1, MagicLink stores serialized action objects in the magiclinks.action database column and deserializes them through src/MagicLink.php and src/Actions/ResponseAction.php...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25, and 8.0.x below 8.0.12, when running PHP FPM SAPI with the main FPM daemon process running as the root user and child worker processes running as lower-privileged users, it is possible for the child processes to access memory...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21, and 8.0.x below 8.0.8, when using the Firebird PDO driver extension, a malicious database server can cause crashes in various database functions, such as getAttribute, execute, fetch, and others, by returning invalid response data that is no...

Astra Linux – Vulnerability in libgd2

In the gdImageClone function in gd.c within libgd version 2.1.0-rc2 to 2.2.5, there is a NULL pointer dereferencing issue that allows attackers to crash an application through a specific function call sequence. This issue only affects PHP when it is linked with an external libgd not included as...

Astra Linux – Vulnerability in PHP 7.3, PHP 8.1

In PHP versions 8.0. before 8.0.27, 8.1. before 8.1.15, and 8.2. before 8.2.2, when using the PDO::quote function to quote user-supplied data for SQLite, providing an overly long string may cause the driver to incorrectly quote the data. This can further lead to SQL injection vulnerabilities...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions prior to 7.4.31, 8.0.24, and 8.1.11, the phar uncompressor code would recursively uncompress “quines” gzip files, resulting in an infinite loop...

Astra Linux – Vulnerability in PHP 8.1, PHP 7.3

In PHP versions 8.1. before 8.1.28, 8.2. before 8.2.18, and 8.3. before 8.3.5, if a password stored using passwordhash starts with a null byte \x00, testing a blank string as the password via passwordverify will incorrectly return true...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23, and 7.4.x below 7.4.11, when AES-CCM mode is used with the opensslencrypt function and a 12-byte IV is provided, only the first 7 bytes of the IV are actually used. This can result in reduced security and incorrect encrypted data...

Astra Linux – Vulnerability in PHP 8.1, PHP 7.3

In PHP versions 8.1. before 8.1.33, 8.2. before 8.2.29, 8.3. before 8.3.23, and 8.4. before 8.4.10, when parsing XML data in SOAP extensions, overly large 2Gb XML namespace prefixes may lead to null pointer dereferencing. This can result in crashes and affect the availability of the target server...

Astra Linux – Vulnerability in PHP 8.1, PHP 7.3

In PHP versions 8.1. before 8.1.33, 8.2. before 8.2.29, 8.3. before 8.3.23, and 8.4. before 8.4.10, some functions like fsockopen lack validation to ensure that the supplied hostname does not contain null characters. This may cause other functions like parseurl to handle the hostname differently,...

Astra Linux – Vulnerability in PHP 8.1, PHP 7.3

In PHP versions 8.1. before 8.1.31, 8.2. before 8.2.26, and 8.3. before 8.3.14, uncontrolled long string inputs to the ldapescape function on 32-bit systems can lead to an integer overflow, resulting in an out-of-bounds write...

Astra Linux – Vulnerability in php-pear

In ArchiveTar before version 1.4.14, symlinks can reference targets outside of the extracted archive. This is a separate vulnerability from CVE-2020-36193...

Astra Linux – Vulnerability in PHP 8.1, PHP 7.3

In PHP versions starting from 8.1. up to 8.1.32, and from 8.2. up to 8.2.28, and from 8.3. up to 8.3.19, as well as in PHP versions starting from 8.4. up to 8.4.5, there is a limitation on the size of the location parameter due to the limited size of the location buffer, which is set to 1024...

Astra Linux – Vulnerability in Python 3.7, PHP 7.3

The Keccak XKCP SHA-3 reference implementation, prior to the update of fdc6fef, has an integer overflow and resulting buffer overflow issue. This vulnerability allows attackers to execute arbitrary code or compromise the expected cryptographic properties of the algorithm. This issue occurs within...

Astra Linux – Vulnerability in PHP 7.3, PHP 8.1

In PHP versions 8.1. before 8.1.30, and 8.2. before 8.2.24, as well as 8.3. before 8.3.12, erroneous parsing of multipart form data contained in an HTTP POST request could result in legitimate data not being processed. This could allow malicious attackers to control a portion of the submitted dat...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions 8.0. before 8.0.30, 8.1. before 8.1.22, and 8.2. before 8.2.8, when loading PHAR files, insufficient length checking may lead to a stack buffer overflow, potentially causing memory corruption or Remote Code Execution RCE...