{"id":"CVE-2026-79320","title":"Stencil core 4.43.5 contains a DOM-based cross-site scripting (XSS) vulnerability in the component runtime","summary":"Stencil core 4.43.5 contains a DOM-based cross-site scripting (XSS) vulnerability in the component runtime. When a downstream application enables the experimental slot fixes option and uses scoped components, assigning a string to the te…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-09-21","updated":"2026-09-24","sourceUpdated":"2026-09-24T13:17:11.380","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-79320","references":[{"url":"https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79320.md","label":"cve@mitre.org"},{"url":"https://github.com/stenciljs/core","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-24T12:48:26.689808Z"},"epss":0.00155,"epssPercentile":0.04532,"ingestedAt":"2026-09-21T19:51:58.869Z","slug":"CVE-2026-79320","body":"## Overview\n\nStencil core 4.43.5 contains a DOM-based cross-site scripting (XSS) vulnerability in the component runtime. When a downstream application enables the experimental slot fixes option and uses scoped components, assigning a string to the textContent property of such a component's host element causes the value to be parsed as HTML instead of being inserted as text. If an application writes attacker-controlled data to these host elements, the data can be interpreted as markup and script can execute in the context of the application's origin.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":210128,"id":"CVE-2026-79320","ts":1790257441527,"field":"cvss","old":null,"new":"6.1"},{"seq":210127,"id":"CVE-2026-79320","ts":1790257441527,"field":"severity","old":"none","new":"medium"}]}