CVE-2026-2355

{"id": "CVE-2026-2355", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-2355", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-04T15:01:10.759696Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "joedolson", "product": "My Calendar \u2013 Accessible Event Manager", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "3.7.3"}], "defaultStatus": "unaffected"}]}], "published": "2026-03-04T12:16:03.023", "references": [{"url": "https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.2/my-calendar-shortcodes.php#L112", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/my-calendar/tags/3.7.2/my-calendar-templates.php#L83", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-shortcodes.php#L112", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/my-calendar/trunk/my-calendar-templates.php#L83", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3464603%40my-calendar%2Ftrunk&old=3454989%40my-calendar%2Ftrunk&sfp_email=&sfph_mail=#file6", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/03d5c82e-f82f-4156-bb3e-e6eb365a6c36?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "The My Calendar \u2013 Accessible Event Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `template` attribute of the `[my_calendar_upcoming]` shortcode in all versions up to, and including, 3.7.3. This is due to the use of `stripcslashes()` on user-supplied shortcode attribute values in the `mc_draw_template()` function, which decodes C-style hex escape sequences (e.g., `\\x3c` to `<`) at render time, bypassing WordPress's `wp_kses_post()` content sanitization that runs at save time. 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 an injected page."}, {"lang": "es", "value": "El plugin My Calendar \u2013 Accessible Event Manager para WordPress es vulnerable a ataques de tipo Stored Cross-Site Scripting a trav\u00e9s del atributo \u00abtemplate\u00bb del shortcode \u00ab[my_calendar_upcoming]\u00bb en todas las versiones hasta la 3.7.3, incluida esta. Esto se debe al uso de \u00abstripcslashes()\u00bb en los valores de los atributos de los c\u00f3digos cortos proporcionados por el usuario en la funci\u00f3n \u00abmc_draw_template()\u00bb, que decodifica las secuencias de escape hexadecimales de estilo C (por ejemplo, \u00ab\\x3c\u00bb a \u00ab&lt;\u00bb) en el momento de la representaci\u00f3n, eludiendo la sanitizaci\u00f3n de contenido \u00abwp_kses_post()\u00bb de WordPress que se ejecuta en el momento del guardado. Esto permite a los atacantes autenticados, con acceso de nivel colaborador o superior, inyectar scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina inyectada."}], "lastModified": "2026-06-17T10:30:49.910", "sourceIdentifier": "security@wordfence.com"}