# @intlify/core-base (npm) vulnerabilities

5 known vulnerabilities (2 high, 2 medium, 1 low), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 11.4.18 (Nov 3, 2026): no advisory affects it
- Newest unaffected release: 11.4.18 (Nov 3, 2026), the latest release
- Weekly downloads: 4.9M
- Releases: 227 since 9.0.0 (Feb 27, 2021)
- Registry: https://www.npmjs.com/package/@intlify/core-base
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-118257: 9.14.5 (10.0.0-alpha.1 is outside it); 10.0.8 (11.0.0-beta.0 is outside it); 11.1.10 to 11.4.13 (11.4.14 is outside it); 12.0.0-alpha.4 (12.0.0-alpha.5 is outside it)
- CVE-2026-118256: 9.0.0-beta.12 to 11.4.13 (11.4.14 is outside it); 12.0.0-alpha.1 to 12.0.0-alpha.4 (12.0.0-alpha.5 is outside it)
- CVE-2025-53892: 9.0.0 to 9.14.4 (9.14.5 is outside it); 10.0.0 to 10.0.7 (10.0.8 is outside it); 11.0.0 to 11.1.9 (11.1.10 is outside it)
- CVE-2025-27597: 9.1.0 to 9.1.10 (9.1.11 is outside it)
- CVE-2024-52809: 9.3.0 to 9.14.1 (9.14.2 is outside it); 10.0.0 to 10.0.4 (10.0.5 is outside it)

## Advisories (5)

### [CVE-2026-118257](https://cve.now/CVE-2026-118257): Vue I18n: escapeParameter does not prevent XSS through srcdoc in translation messages

- Severity: High 7.2
- Published: Oct 28, 2026
- Affected: versions 9.14.5; versions 10.0.8; from 11.1.10, fixed in 11.4.14; from 12.0.0-alpha.4, fixed in 12.0.0-alpha.5.
- Fixed in 11.4.14 (released Oct 10, 2026, 18 days before disclosure) and 12.0.0-alpha.5 (released Oct 10, 2026, 18 days before disclosure).
- The latest release, 11.4.18, is not affected.
- 57% of @intlify/core-base downloads last week were affected versions (3M).

### [CVE-2026-118256](https://cve.now/CVE-2026-118256): Vue I18n: \`escapeParameter\` does not escape named values when the same call also passes a list

- Severity: Low 2.1
- Published: Oct 28, 2026
- Affected: from 9.0.0-beta.12, fixed in 11.4.14; from 12.0.0-alpha.1, fixed in 12.0.0-alpha.5.
- Fixed in 11.4.14 (released Oct 10, 2026, 18 days before disclosure) and 12.0.0-alpha.5 (released Oct 10, 2026, 18 days before disclosure).
- The latest release, 11.4.18, is not affected.
- 71% of @intlify/core-base downloads last week were affected versions (3.8M).

### [CVE-2025-53892](https://cve.now/CVE-2025-53892): Intlify Vue I18n's escapeParameterHtml does not prevent DOM-based XSS via tag attributes like onerror

- Severity: Medium 5.3
- Published: Jul 16, 2025
- Affected: from 9.0.0, fixed in 9.14.5; from 10.0.0, fixed in 10.0.8; from 11.0.0, fixed in 11.1.10.
- Fixed in 9.14.5 (released Jul 16, 2025, the day of disclosure), 10.0.8 (released Jul 16, 2025, the day of disclosure) and 11.1.10 (released Jul 16, 2025, the day of disclosure).
- The latest release, 11.4.18, is not affected.
- 14% of @intlify/core-base downloads last week were affected versions (733.1K).

### [CVE-2025-27597](https://cve.now/CVE-2025-27597): Vue I18n Prototype Pollution in \`handleFlatJson\`

- Severity: High 8.9
- Published: Mar 7, 2025
- Affected: from 9.1.0, fixed in 9.1.11.
- Fixed in 9.1.11 (released Mar 7, 2025, the day of disclosure).
- The latest release, 11.4.18, is not affected.
- 1.2% of @intlify/core-base downloads last week were affected versions (66K).

### [CVE-2024-52809](https://cve.now/CVE-2024-52809): Cross-site Scripting vulnerability with prototype pollution in vue-i18n

- Severity: Medium 5.3
- Published: Nov 29, 2024
- Affected: from 9.3.0, fixed in 9.14.2; from 10.0.0, fixed in 10.0.5.
- Fixed in 9.14.2 (released Nov 28, 2024, 1 day before disclosure) and 10.0.5 (released Nov 28, 2024, 1 day before disclosure).
- The latest release, 11.4.18, is not affected.
- 4.4% of @intlify/core-base downloads last week were affected versions (236.2K).

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