CVE-2026-118257
Vue I18n: escapeParameter does not prevent XSS through srcdoc in translation messages
- State
- Published
- Severity
- 7.2 High
- Published
- Oct 28, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 27, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
vue-i18nintlify |
|
References
- https://github.com/intlify/vue-i18n/security/advisories/GHSA-83rm-6c8r-g728
- https://github.com/intlify/vue-i18n/pull/2679
- https://github.com/intlify/vue-i18n/commit/43391d20e7c85403cb59bdb21b5d542819f54042
- https://github.com/intlify/vue-i18n/releases/tag/v11.4.14
- https://github.com/intlify/vue-i18n/releases/tag/v12.0.0-alpha.5
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