CVE-2025-53892

Intlify Vue I18n's escapeParameterHtml does not prevent DOM-based XSS via tag attributes like onerror

CVSS 4.0 5.3 MEDIUMEUVD CVSS 4.0 5.3 CVSS 4.0 · [email protected] · Secondary 5.3 MEDIUMCVSS_V4 Publisher rating MODERATEFixed by vue-i18n 9.14.5 Fixed by vue-i18n 10.0.8 Fixed by vue-i18n 11.1.10 Fixed by @intlify/core 9.14.5KEV status unknown

Original advisory

cve-program · CVE-2025-53892

Published

Vue I18n is the internationalization plugin for Vue.js. The escapeParameterHtml: true option in Vue I18n is designed to protect against HTML/script injection by escaping interpolated parameters. However, starting in version 9.0.0 and prior to versions 9.14.5, 10.0.8, and 11.1.0, this setting fails to prevent execution of certain tag-based payloads, such as <img src=x onerror=...>, if the interpolated value is inserted inside an HTML context using v-html. This may lead to a DOM-based XSS vulnerability, even when using escapeParameterHtml: true, if a translation string includes minor HTML and is rendered via v-html. Versions 9.14.5, 10.0.8, and 11.1.0 contain a fix for the issue.

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euvd · EUVD-2025-21704

Published

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nvd · CVE-2025-53892

Published

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osv · GHSA-x8qp-wqqm-57ph

Published

### Summary The escapeParameterHtml: true option in Vue I18n is designed to protect against HTML/script injection by escaping interpolated parameters. However, this setting fails to prevent execution of certain tag-based payloads, such as `<img src=x onerror=...>`, if the interpolated value is inserted inside an HTML context using v-html. This may lead to a DOM-based XSS vulnerability, even when using escapeParameterHtml: true, if a translation string includes minor HTML and is rendered via v-html. ### Details When escapeParameterHtml: true is enabled, it correctly escapes common injection points. However, it does not sanitize entire attribute contexts, which can be used as XSS vectors via: `<img src=x onerror=alert(1)> ` ### PoC In your Vue I18n configuration: ``` const i18n = createI18n({ escapeParameterHtml: true, messages: { en: { vulnerable: 'Caution: <img src=x onerror="{payload}">' } } }); ``` Use this interpolated payload: `const payload = '<script>alert("xss")</script>';` Render the translation using v-html (even not using v-html): `<p v-html="$t('vulnerable', { payload })"></p> ` Expected: escaped content should render as text, not execute. Actual: script executes in some environments (or the payload is partially parsed as HTML). ### Impact This creates a DOM-based Cross-Site Scripting (XSS) vulnerability despite enabling a security option (escapeParameterHtml) .

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Affected versions, risk and source history

Exploitation and risk

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15 Nov 2026 11:14:21 UTC