CVE-2026-118256

Vue I18n: `escapeParameter` does not escape named values when the same call also passes a list

LOW
2.1
CVSS Score
Published: October 28, 2026 at 06:20 PM UTC
Updated: October 30, 2026 at 03:16 PM UTC
1 product affected across 1 vendorVue I18N

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Severity
LOW2.1
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

Vue I18n is the internationalization plugin for Vue.js. From 9.0.0-beta.5 until 11.4.14 and 12.0.0-alpha.5, enabling escapeParameter, called escapeParameterHtml in the Legacy API, does not escape named interpolation values when the same translation call supplies both list and named values because escapeParams() processes only the list branch. Applications that render translations as HTML and pass untrusted named values with a list can insert attacker-controlled markup, including phishing links, forms, and layout changes, and can permit script execution when combined with the srcdoc sanitizer bypass or on releases without the sanitizer. This issue is fixed in versions 11.4.14 and 12.0.0-alpha.5.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

12.0.0-alpha.1 ≤ v < 12.0.0-alpha.59.0.0-beta.5 ≤ v < 11.4.1412.0.0-alpha.19.0.0-beta.5

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.1LOWGitHub_M
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-79CWE-116

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