{"id":"CVE-2026-1055","state":"PUBLISHED","title":"TalkJS <= 0.1.15 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'welcomeMessage' Parameter","description":"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.","publishedAt":"2026-02-19T04:36:28.335Z","updatedAt":"2026-04-14T15:10:31.175Z","severity":{"score":4.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["talkjs TalkJS"],"affected":[{"vendor":"talkjs","product":"TalkJS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.1.15","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/f91ed211-9703-44fb-a2f8-8d8da910b4c7?source=cve","https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/SettingsPage.php#L276","https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/SettingsPage.php#L276","https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/FieldBuilder.php#L147","https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/FieldBuilder.php#L147","https://plugins.trac.wordpress.org/changeset/3465226/"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/1xxx/CVE-2026-1055.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1055","state":"PUBLISHED","datePublished":"2026-02-19T04:36:28.335Z","dateUpdated":"2026-04-14T15:10:31.175Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-01-16T17:11:29.252Z"},"containers":{"cna":{"title":"TalkJS <= 0.1.15 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'welcomeMessage' Parameter","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."}],"affected":[{"vendor":"talkjs","product":"TalkJS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.1.15","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/f91ed211-9703-44fb-a2f8-8d8da910b4c7?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/SettingsPage.php#L276"},{"url":"https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/SettingsPage.php#L276"},{"url":"https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/FieldBuilder.php#L147"},{"url":"https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/FieldBuilder.php#L147"},{"url":"https://plugins.trac.wordpress.org/changeset/3465226/"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N","baseScore":4.4,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-04-08T17:34:07.669Z"},"credits":[{"lang":"en","type":"finder","value":"Bhumividh Treloges"}],"timeline":[{"time":"2026-02-18T15:58:50.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-23T18:46:22.811619Z","id":"CVE-2026-1055","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-14T15:10:31.175Z"}}]}}}