Vulnerabilidades

Con el objetivo de informar, advertir y ayudar a los profesionales sobre las últimas vulnerabilidades de seguridad en sistemas tecnológicos, ponemos a disposición de los usuarios interesados en esta información una base de datos con información en castellano sobre cada una de las últimas vulnerabilidades documentadas y conocidas.

Este repositorio con más de 75.000 registros esta basado en la información de NVD (National Vulnerability Database) – en función de un acuerdo de colaboración – por el cual desde INCIBE realizamos la traducción al castellano de la información incluida. En ocasiones este listado mostrará vulnerabilidades que aún no han sido traducidas debido a que se recogen en el transcurso del tiempo en el que el equipo de INCIBE realiza el proceso de traducción.

Se emplea el estándar de nomenclatura de vulnerabilidades CVE (Common Vulnerabilities and Exposures), con el fin de facilitar el intercambio de información entre diferentes bases de datos y herramientas. Cada una de las vulnerabilidades recogidas enlaza a diversas fuentes de información así como a parches disponibles o soluciones aportadas por los fabricantes y desarrolladores. Es posible realizar búsquedas avanzadas teniendo la opción de seleccionar diferentes criterios como el tipo de vulnerabilidad, fabricante, tipo de impacto entre otros, con el fin de acortar los resultados.

Mediante suscripción RSS o Boletines podemos estar informados diariamente de las últimas vulnerabilidades incorporadas al repositorio.

CVE-2026-6391

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** The Sentence To SEO (keywords, description and tags) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation on the create_admin_page() function. This makes it possible for unauthenticated attackers to inject malicious web scripts and update plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Gravedad CVSS v3.1: MEDIA

Última modificación:

20/05/2026

CVE-2026-6394

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** The Nexa Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) in versions up to and including 1.1.1. This is due to the import_demo() function accepting a user-supplied URL in the demo_json_file POST parameter and passing it directly to wp_remote_get() without any URL validation or restriction against internal or private network destinations. The nexa_blocks_nonce required for the AJAX action is publicly exposed in the HTML source of any frontend page where the plugin is active via wp_localize_script on the enqueue_block_assets hook, effectively making the nonce available to all visitors and bypassing any intended authentication barrier. This makes it possible for unauthenticated attackers to make server-side HTTP requests to arbitrary internal or external destinations, potentially exposing internal services, cloud metadata endpoints such as the AWS instance metadata service, localhost services, and other resources not intended to be publicly accessible. A secondary SSRF vector also exists whereby image URLs extracted from the attacker-controlled JSON response are subsequently fetched via a second wp_remote_get() call, allowing chained exploitation through a crafted JSON payload.

Gravedad CVSS v3.1: MEDIA

Última modificación:

20/05/2026

CVE-2026-6395

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** The Word 2 Cash plugin for WordPress is vulnerable to Cross-Site Request Forgery leading to Stored Cross-Site Scripting in versions up to and including 0.9.2. This is due to the complete absence of nonce verification on the settings save handler in the w2c_admin() function, combined with missing input sanitization before storage and missing output escaping when rendering the stored value. The w2c-definitions POST parameter is saved raw via update_option() and later echoed without escaping inside a element. This makes it possible for unauthenticated attackers to forge a request on behalf of a logged-in administrator, storing arbitrary JavaScript payloads that execute in the WordPress admin panel whenever the settings page is visited.

Gravedad CVSS v3.1: MEDIA

Última modificación:

20/05/2026

CVE-2026-6397

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** The Sticky plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `cvmh-sticky` shortcode `readmoretext` attribute in versions up to and including 2.5.6. This is due to insufficient input sanitization and output escaping in the `cvmh_sticky_front_render()` function — the `readmoretext` attribute value is passed through `apply_filters()` and directly concatenated into the HTML output without any escaping function such as `esc_html()`. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts in pages that will execute whenever a user accesses a page containing the injected shortcode.

Gravedad CVSS v3.1: MEDIA

Última modificación:

20/05/2026

CVE-2026-6399

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** The General Options plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 1.1.0. This is due to the use of sanitize_text_field() for output escaping in the Contact Number (ad_contact_number) field — a function that strips HTML tags but does not encode double-quote characters to their HTML entity equivalent (&quot;). When the stored value is echoed inside a double-quoted HTML attribute (value="..."), an attacker-supplied double-quote character breaks out of the attribute context. Even with WordPress&#39;s wp_magic_quotes mechanism (which prefixes quotes with a backslash), the resulting \" sequence is NOT treated as an escaped quote by HTML parsers — the backslash is rendered as a literal character and the bare double-quote still closes the attribute. This makes it possible for authenticated attackers with Administrator-level access and above to inject arbitrary web scripts in the admin settings page that will execute whenever any administrator visits the General Options settings page.

Gravedad CVSS v3.1: MEDIA

Última modificación:

20/05/2026

CVE-2026-43619

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with &#39;use chroot = no&#39;.

Gravedad CVSS v4.0: ALTA

Última modificación:

21/05/2026

CVE-2026-43620

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** Rsync version 3.4.2 and prior contain a receiver-side out-of-bounds array read vulnerability in recv_files() in receiver.c that allows a malicious rsync server to crash the rsync client process. Attackers can exploit the vulnerability by setting CF_INC_RECURSE in compatibility flags and sending a specially crafted file list where the first sorted entry is not the leading dot directory, followed by a transfer record with ndx=0 and an iflag word without ITEM_TRANSFER, causing the receiver to read 8 bytes before the allocated pointer array and dereference an invalid pointer at an unmapped address, resulting in a deterministic SIGSEGV crash of the rsync client.

Gravedad CVSS v4.0: MEDIA

Última modificación:

21/05/2026

CVE-2026-45232

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** Rsync versions before 3.4.3 contain an off-by-one out-of-bounds stack write vulnerability in the establish_proxy_connection() function in socket.c that allows network attackers to corrupt stack memory by sending a malformed HTTP proxy response. Attackers can exploit this by positioning themselves between the client and proxy or controlling the proxy server to send a response line of 1023 or more bytes without a newline terminator, causing a null byte to be written to an out-of-bounds stack address when the RSYNC_PROXY environment variable is set.

Gravedad CVSS v4.0: BAJA

Última modificación:

21/05/2026

CVE-2026-43617

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon&#39;s hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.

Gravedad CVSS v4.0: MEDIA

Última modificación:

21/05/2026

CVE-2026-43618

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** Rsync version 3.4.2 and prior contain an integer overflow vulnerability in the compressed-token decoder where a 32-bit signed counter is not checked for overflow, allowing a malicious sender to trigger an overflow that causes the receiver process to read and return data from outside the intended buffer bounds. Attackers can exploit this vulnerability to disclose process memory contents including environment variables, passwords, heap and stack data, and library memory pointers, significantly reducing ASLR effectiveness and facilitating further exploitation.

Gravedad CVSS v4.0: MEDIA

Última modificación:

30/06/2026

CVE-2026-3985

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** The Creative Mail – Easier WordPress & WooCommerce Email Marketing plugin for WordPress is vulnerable to SQL Injection via the &#39;checkout_uuid&#39; parameter in all versions up to, and including, 1.6.9. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query in the `has_checkout_consent()` method. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Gravedad CVSS v3.1: ALTA

Última modificación:

20/05/2026

CVE-2026-45585

Fecha de publicación:

20/05/2026

Idioma:

Inglés

*** Pendiente de traducción *** Microsoft is aware of a security feature bypass vulnerability in Windows publicly referred to as &quot;YellowKey&quot;. The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices.<br /> We are issuing this CVE to provide mitigation guidance that can be implemented to protect against this vulnerability until the security update is made available.

Gravedad CVSS v3.1: MEDIA

Última modificación:

20/05/2026

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