# TinaCMS vulnerabilities

Source: https://junglewise.ai/threats/vendors/tinacms  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 11 November 2026, 20:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/tinacms.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 7 vulnerabilities in TinaCMS: 1 in the last 7 days and 4 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126774, was published on 11 November 2026. Nothing in the last four weeks, down from 3 vulnerabilities in the four before. 0 critical against 1. 1 technology has a page of its own.

## Counts

- Last 7 days: 1
- Last 30 days: 1
- Last 90 days: 4
- All time: 7 (1 critical, 0 exploited in the wild)

## About TinaCMS

Headless CMS and site editing platform built on Git and Markdown.

## Latest TinaCMS vulnerabilities

- [CVE-2026-126774: @tinacms/mdx code injection in MDX serializer](https://junglewise.ai/threats/cve-2026-126774-tinacms-mdx-before-2-4-2-contains-a-code-injection-vulnerability) (high, CVSS 8.2, published 11 Nov 2026)
- [CVE-2026-108261: TinaCMS admin preview iframe origin validation bypass](https://junglewise.ai/threats/cve-2026-108261-tinacms-admin-preview-iframe-loads-an-attacker-controlled-origin) (critical, CVSS 9.3, published 9 Oct 2026)
- [CVE-2026-108260: TinaCMS tina-markdown stored XSS via unvalidated link URL scheme](https://junglewise.ai/threats/cve-2026-108260-tinacms-web-components-tina-markdown-writes-rich-text-link-urls) (high, CVSS 7.6, published 9 Oct 2026)
- [CVE-2026-108259: TinaCMS CLI code injection via unescaped Git branch name](https://junglewise.ai/threats/cve-2026-108259-tina-code-injection-via-unescaped-git-branch-name-in-generated) (high, CVSS 8.2, published 9 Oct 2026)
- [CVE-2026-55661: TinaCMS stored XSS in rich-text link and image rendering](https://junglewise.ai/threats/cve-2026-55661-tinacms-stored-xss-in-rich-text-link-and-image-rendering) (medium, CVSS 4, published 1 Jul 2026)
- [CVE-2026-55660: TinaCMS origin validation error in postMessage handlers](https://junglewise.ai/threats/cve-2026-55660-tinacms-origin-validation-error-in-postmessage-handlers) (high, CVSS 4, published 1 Jul 2026)
- [CVE-2026-24125: TinaCMS graphql path traversal in document mutations](https://junglewise.ai/threats/cve-2026-24125-tinacms-tinacms-graphql-path-traversal-in-graphql-mutations) (low, CVSS 3.1, published 12 Mar 2026)

## Most severe TinaCMS vulnerabilities

- [CVE-2026-108261: TinaCMS admin preview iframe origin validation bypass](https://junglewise.ai/threats/cve-2026-108261-tinacms-admin-preview-iframe-loads-an-attacker-controlled-origin) (critical, CVSS 9.3, published 9 Oct 2026)
- [CVE-2026-108259: TinaCMS CLI code injection via unescaped Git branch name](https://junglewise.ai/threats/cve-2026-108259-tina-code-injection-via-unescaped-git-branch-name-in-generated) (high, CVSS 8.2, published 9 Oct 2026)
- [CVE-2026-126774: @tinacms/mdx code injection in MDX serializer](https://junglewise.ai/threats/cve-2026-126774-tinacms-mdx-before-2-4-2-contains-a-code-injection-vulnerability) (high, CVSS 8.2, published 11 Nov 2026)
- [CVE-2026-108260: TinaCMS tina-markdown stored XSS via unvalidated link URL scheme](https://junglewise.ai/threats/cve-2026-108260-tinacms-web-components-tina-markdown-writes-rich-text-link-urls) (high, CVSS 7.6, published 9 Oct 2026)
- [CVE-2026-55660: TinaCMS origin validation error in postMessage handlers](https://junglewise.ai/threats/cve-2026-55660-tinacms-origin-validation-error-in-postmessage-handlers) (high, CVSS 4, published 1 Jul 2026)
- [CVE-2026-55661: TinaCMS stored XSS in rich-text link and image rendering](https://junglewise.ai/threats/cve-2026-55661-tinacms-stored-xss-in-rich-text-link-and-image-rendering) (medium, CVSS 4, published 1 Jul 2026)
- [CVE-2026-24125: TinaCMS graphql path traversal in document mutations](https://junglewise.ai/threats/cve-2026-24125-tinacms-tinacms-graphql-path-traversal-in-graphql-mutations) (low, CVSS 3.1, published 12 Mar 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 3 vulnerabilities in the four before. 0 critical against 1.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 3 | 1 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 1 | 0 | 0 |

## TinaCMS technologies

- [TinaCMS GraphQL](https://junglewise.ai/threats/technologies/graphql): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "TinaCMS vulnerabilities", https://junglewise.ai/threats/vendors/tinacms, 11 November 2026.