{"id":"CVE-2026-112353","title":"GFI KerioConnect < 10.0.8p2 Stored XSS via SVG Attachment","summary":"GFI KerioConnect (Kerio Connect) before 10.0.8 Patch 2 contains a stored cross-site scripting vulnerability in the Webmail component that allows a remote attacker to run JavaScript in a victim's authenticated Webmail session by uploading…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","cvssSource":"cna","cwe":["CWE-79","CWE-83"],"vendor":"GFI USA, LLC","product":"GFI KerioConnect","affected":["gfi_kerioconnect < 10.0.8p2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-28T14:34:02.737924Z"},"published":"2026-10-27","updated":"2026-10-28","sourceUpdated":"2026-10-28T16:16:12.399Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112353","references":[{"url":"https://gfi.ai/resource/kerioconnect-product-releases/","label":"Release Notes"},{"url":"https://www.vulncheck.com/advisories/gfi-kerioconnect-8p2-stored-xss-via-svg-attachment","label":"VulnCheck Advisory: GFI KerioConnect < 10.0.8p2 Stored XSS via SVG Attachment"}],"tags":["cve.org"],"epss":0.00243,"epssPercentile":0.15466,"ingestedAt":"2026-10-27T16:32:34.409Z","slug":"CVE-2026-112353","body":"## Overview\n\nGFI KerioConnect (Kerio Connect) before 10.0.8 Patch 2 contains a stored cross-site scripting vulnerability in the Webmail component that allows a remote attacker to run JavaScript in a victim's authenticated Webmail session by uploading a crafted SVG email attachment that bypasses sanitization of event-handler attributes. Attackers can exploit the temporary-download endpoint's insufficient Content-Security-Policy sandbox to execute scripts when the attachment is opened, enabling theft of the victim's credentials and mailbox contents. Proofpoint Threat Research has observed exploitation in the wild as a credential and mailbox stealer.\n\n## Affected\n\n- `gfi_kerioconnect < 10.0.8p2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}