# @tinacms/app (npm) vulnerabilities

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

## At a glance

- Latest release: 2.6.0 (Oct 19, 2026): no advisory affects it
- Newest unaffected release: 2.6.0 (Oct 19, 2026), the latest release
- Weekly downloads: 62.9K
- Dependents: 1
- Releases: 500+ since 2.4.2 (Apr 8, 2026)
- Registry: https://www.npmjs.com/package/@tinacms/app
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-108261: 0.0.0-0509095-20260525122024 to 2.5.13 (2.5.14 is outside it)
- CVE-2026-55660: 0.0.0-0509095-20260525122024 to 2.5.5 (2.5.6 is outside it)

Older releases aren't stored, so the earliest spans may start sooner.

## Advisories (2)

### [CVE-2026-108261](https://cve.now/CVE-2026-108261): TinaCMS admin preview iframe loads an attacker-controlled origin from the URL fragment

- Severity: Critical 9.3
- Published: Oct 9, 2026
- Affected: fixed in 2.5.14.
- Fixed in 2.5.14 (released Sep 14, 2026, 25 days before disclosure).
- The latest release, 2.6.0, is not affected.
- 62% of @tinacms/app downloads last week were affected versions (39.6K).

### [CVE-2026-55660](https://cve.now/CVE-2026-55660): TinaCMS: Cross-origin postMessage handlers and rich-text URL-sanitization bypass enable stored XSS and session takeover

- Severity: High 7.6
- Published: Jul 1, 2026
- Affected: fixed in 2.5.6.
- Fixed in 2.5.6 (released Jun 15, 2026, 16 days before disclosure).
- The latest release, 2.6.0, is not affected.
- 46% of @tinacms/app downloads last week were affected versions (29K).

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/packages/npm/@tinacms/app
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.