CVE-2026-111862
CriticalCVSS 9.8Summary
Rank Math SEO PRO for WordPress is affected by a supply-chain compromise in a subset of version 3.0.123 packages downloaded or updated between October 15, 2026 20:02 UTC and October 16, 2026 07:12 UTC. The affected plugin files contained malware that could compromise a website if activated, establish persistent access, communicate with rank1cdn[.]com, and expose WordPress credentials, database credentials, API keys, and other secrets.
Risk Assessment
Sites that activated an affected package should be treated as compromised — attackers may have persistent access, hidden backdoors, and stolen credentials. The risk includes full compromise of the web server and related systems.
Recommendation
Identify sites that downloaded or updated version 3.0.123 within the specified window, treat them as compromised, and perform a full investigation (wp_options, admin accounts, PHP files, cron). Update to the clean version 3.0.124 and remove any detected indicators of compromise.
Related vulnerabilities
- CVE-2026-107188Critical
A user can upload export reports with any file contents and specify any contents. JSP code can be uploaded, JSPX can be specified as the file extension, and anyone can browse to the uploaded file, leading to command execution. The authentication bypass vulnerability can be chained with this vulnerability to run code on the server without authentication.
- CVE-2026-111058Critical
Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send execute_request messages containing arbitrary Python. The endpoint blocklist does not cover /api/kernels, and the websocket wrapper previously tracked idle activity without authorizing executable messages.
- CVE-2026-111057Critical
Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.4, a missing comma in BLOCKED_PATTERNS concatenates the /lab and /api/terminals regular-expression literals. Requests to /api/terminals therefore bypass the anonymous endpoint blocklist and reach Jupyter Server's terminal API. An unauthenticated attacker can use the resulting interactive operating-system shell to execute commands and access data available to the Mercury process.
- CVE-2026-109432Critical
Camunda 7.24.0 before 7.24.14 and 7.23.0 before 7.23.17 contains an expression injection vulnerability where AdhocQueryValidator.validate() fails to check sub-query expression maps within the orQueries field exposed by TaskQueryDto, allowing authenticated users to bypass the enableExpressionsInAdhocQueries restriction. Attackers can supply a malicious JUEL expression such as dueAfterExpression inside an orQueries entry to achieve arbitrary Java reflection and invoke java.lang.Runtime.exec, resulting in operating-system command execution as the engine service user.
- CVE-2026-112296Critical
FlyCms through commit edfdf724 contains a default credentials vulnerability that allows unauthenticated remote attackers to gain super administrator access via the flycms account with password admin123. Attackers can log in through POST /api/auth/login, solving only the image captcha, to obtain full control of site content, users and configuration.
- CVE-2026-112292Critical
CheckCle through 1.6.0 contains a missing authorization vulnerability that allows unauthenticated attackers to read, modify and delete records because shipped PocketBase collections use empty API rules. Attackers can query /api/collections/<name>/records endpoints to steal server_token values and alert_configurations secrets, disable alerting, alter status pages, or delete monitoring data.
- CVE-2026-78162Critical
A deserialization of untrusted data vulnerability in Apache Camel affects the camel-hazelcast component. Two configuration paths (ReplicatedHazelcastAggregationRepository and client mode in HazelcastDefaultComponent) fail to apply the JavaSerializationFilterConfig, allowing an attacker to achieve remote code execution by injecting a malicious Java object into the Hazelcast cluster.
- CVE-2026-111406Critical
The MapSVG plugin (interactive vector maps for WordPress) through 8.16.1 allows unrestricted upload of files with dangerous types. This enables an attacker to upload and execute a web shell on the web server.
- CVE-2026-110887Critical
The HivePress plugin through 1.7.32 contains a code injection vulnerability due to improper control of code generation. This allows remote code inclusion into the application.
- CVE-2026-103091Critical
Google OSS Agent Mesh (SAM) versions 0.1.0-alpha.1 through 0.1.0-alpha.8 contain Missing Authorization (CWE-862) and Insecure Default Initialization (CWE-1188) in the MCP proxy and OIDC registration flow. Public disclosure of OIDC configuration via GET /info and auto-enrollment of any valid OIDC token holder via POST /register without claim filtering or ban checks allow a remote attacker to self-enroll into the mesh and invoke arbitrary tools across all connected MCP backend nodes.
Original NVD description (English source)
Rank Math SEO PRO for WordPress is affected by a supply-chain compromise in a subset of version 3.0.123 packages downloaded or updated between October 15, 2026 at 20:02 UTC and October 16, 2026 at 07:12 UTC. Rank Math states that the affected plugin files contained malware that could compromise a website if the plugin was activated and directs sites that activated an affected package to treat the website as compromised. The malware may establish persistent access, communicate with rank1cdn[.]com, recreate hidden backdoors on page visits, and expose WordPress credentials, database credentials, API keys, and other secrets accessible to the web server. Rank Math identifies three malicious wp_options keys, hidden PHP backdoors, unauthorized administrator accounts, a fake WordPress core file, PHP-executable .cache files, and a system cron marker as incident indicators. Only packages obtained during the vendor-confirmed window are claimed as affected; version 3.0.123 alone is not sufficient to establish compromise. Rank Math removed the affected files and released version 3.0.124 as the clean replacement.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

