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CVE-2026-34603

7.1 · HIGH

Tina is a headless content management system.

Published Apr 1, 2026CWE-22EPSS 0.46%

Overview

CVE-2026-34603 is a high-severity vulnerability. It was published on April 1, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Tina is a headless content management system. Prior to version 2.2.2, @tinacms/cli recently added lexical path-traversal checks to the dev media routes, but the implementation still validates only the path string and does not resolve symlink or junction targets. If a link already exists under the media root, Tina accepts a path like pivot/written-from-media.txt as "inside" the media directory and then performs real filesystem operations through that link target. This allows out-of-root media listing and write access, and the same root cause also affects delete. This issue has been patched in version 2.2.2.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/tinacms/tinacms/commit/f124eabaca10dac9a4d765c9e4135813c4830955GitHubgithub.com/tinacms/tinacms/security/advisories/GHSA-g87c-r2jp-293wGitHubgithub.com/tinacms/tinacms/security/advisories/GHSA-g87c-r2jp-293w

How CyberStrike helps

Frequently asked questions

What is CVE-2026-34603?

CVE-2026-34603 is a high-severity vulnerability. It was published on April 1, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-34603?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-34603?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-34603?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-34603 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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