CVE-2026-118257
Vue I18n: escapeParameter does not prevent XSS through srcdoc in translation messages
Vue I18n is the internationalization plugin for Vue.js. From 11.1.10 until 11.4.14 and from 12.0.0-alpha.4 until 12.0.0-alpha.5, sanitizeTranslatedHtml() escapes markup and event-handler text inside an iframe srcdoc value but leaves the srcdoc attribute active. Browsers decode the character references and parse the value as a same-origin nested HTML document, allowing attacker-controlled parameters or translation content placed in srcdoc to execute script when applications enable escapeParameter and render translations as HTML through v-html. Versions 9.14.5 and 10.0.8 are also affected and are no longer supported, while i18n-t rendering is not affected. This issue is fixed in versions 11.4.14 and 12.0.0-alpha.5.
- Affected
- intlify · vue-i18n
- CVSS v3.1 GITHUB
- 7.2 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - EPSS
- 0.27% chance of exploitation in the next 30 days, 20th percentile
- Published
- 2026-10-28
- Updated
- 2026-10-29
Proof-of-concept exploits (1)
CVE references
- intlify/vue-i18n/commit/43391d20e7c85403cb59bdb21b5d542819f54042REFERENCE
- intlify/vue-i18n/pull/2679REFERENCE
- intlify/vue-i18n/releases/tag/v11.4.14REFERENCE
- intlify/vue-i18n/releases/tag/v12.0.0-alpha.5REFERENCE
- intlify/vue-i18n/security/advisories/GHSA-83rm-6c8r-g728REFERENCE