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{"cveTags": [], "descriptions": [{"lang": "en", "value": "The TalkJS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 0.1.15 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled."}, {"lang": "es", "value": "El plugin TalkJS para WordPress es vulnerable a cross-site scripting almacenado a trav\u00e9s de la configuraci\u00f3n de administrador en todas las versiones hasta la 0.1.15, inclusive, debido a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes. Esto permite que atacantes autenticados, con permisos de nivel de administrador y superiores, inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina inyectada. Esto solo afecta a las instalaciones multisitio y a las instalaciones donde se ha deshabilitado unfiltered_html."}], "id": "CVE-2026-1055", "lastModified": "2026-04-15T00:35:42.020", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}]}, "published": "2026-02-19T07:17:43.543", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/FieldBuilder.php#L147"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/SettingsPage.php#L276"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/FieldBuilder.php#L147"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/SettingsPage.php#L276"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3465226/"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f91ed211-9703-44fb-a2f8-8d8da910b4c7?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.1.15]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "TalkJS", "source": "cna", "vendor": "talkjs"}, "product": "talkjs", "vendor": "talkjs"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "wordpress", "vendor": "wordpress"}], "analysis": {"en": {"generated_at": "2026-04-15T15:46:17.220049+00:00", "value": {"mitigation_remediation": ["Upgrade the TalkJS plugin to a version newer than 0.1.15 where the input is properly sanitized and output is escaped.", "If an update is not yet available, disable the TalkJS plugin or the specific welcomeMessage setting until a fix is released.", "As a temporary mitigation, re\u2011enable WordPress's unfiltered_html feature or restrict the administrator role so that only trusted users can modify plugin settings."], "summary": {"action": "Apply Update", "impact": "Stored Cross\u2011Site Scripting via admin settings"}, "threat_synthesis": {"affected_systems": "All TalkJS plugin installations up to and including version 0.1.15 on WordPress multisite setups or on installations where the unfiltered_html feature has been disabled are affected. The flaw resides in standard administrative settings and is not present in later releases.", "description_and_impact": "The TalkJS WordPress plugin allows authenticated users with administrator or higher privileges to store malicious scripts in the welcomeMessage field. Those scripts are delayed in a database entry and executed whenever another user views the affected page. This stored cross\u2011site scripting can lead to session hijacking, defacement, or the delivery of malware to users who view the page.", "risk_and_exploitability": "With a CVSS score of 4.4, the vulnerability is of moderate severity. The EPSS score is below 1\u202f%, indicating a low probability of exploitation in the near term, and it is not listed in CISA's KEV catalog. The attack requires the attacker to be a logged\u2011in administrator who can modify the welcomeMessage field; once the payload is stored, any site visitor who loads the affected page will execute the script. This grants the attacker powerful client\u2011side capabilities without the need to exploit backend code or user credentials beyond administrative access."}}}}, "created": "2026-02-19T10:06:46.243521+00:00", "updated": "2026-04-15T17:15:10.601471+00:00", "vendors": ["talkjs", "talkjs$PRODUCT$talkjs", "wordpress", "wordpress$PRODUCT$wordpress"]}