CVE-2026-49400 October CMS: PHP Object Injection via Backend Widget Session Storage

October System provides the system module for October Content Management System. Prior to versions 3.7.17 and 4.2.21, the backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could...

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...

Deserialization of Untrusted Data

Overview october/system is a System module for October CMS. Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the SessionMaker process. An attacker can execute arbitrary PHP code by injecting a crafted serialized payload into the widget. session key, which i...

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 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 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 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

In PHP versions 8.1. before 8.1.31, 8.2. before 8.2.26, and 8.3. before 8.3.14, when using streams with a configured proxy and the “requestfulluri” option, the URI is not properly sanitized. This can lead to HTTP request smuggling, allowing attackers to use the proxy to send arbitrary HTTP reques...

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 8.1.33, 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 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

In PHP versions 7.3.x below 7.3.26, 7.4.x below 7.4.14, and 8.0.0, when validating URLs using functions like filtervar$url, FILTERVALIDATEURL, PHP will accept a URL with an invalid password as a valid URL. This may cause functions that rely on the validity of URLs to misinterpret the URL and...

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 Apache2

A partial fix for CVE-2024-39884 in the core of Apache HTTP Server 2.4.61 ignores some uses of the legacy content-type-based configuration of handlers. Configurations like “AddType” and similar ones, under certain circumstances where files are requested indirectly, can lead to exposure of local...

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

In PHP versions 7.4.x below 7.4.30, 8.0.x below 8.0.20, and 8.1.x below 8.1.7, when the pdomysql extension with the mysqlnd driver is used, if the third-party provider is allowed to provide the host and the connection password, an excessively long password can trigger a buffer overflow in PHP,...

Astra Linux – Vulnerability in PHP 8.1, PHP 7.3

In PHP versions 8.1. before 8.1.34, 8.2. before 8.2.30, 8.3. before 8.3.29, 8.4. before 8.4.16, 8.5. before 8.5.1, a heap buffer overflow occurs in the arrayMerge function when the total number of elements in packed arrays exceeds 32-bit limits or HTMAXSIZE. This issue is caused by an integer...