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CVE-2026-28791

Ssw Tinacms/cli path traversal

7.4 HIGHPublic exploitEPSS 0.45%
  1. Published12 Mar 2026

Description

Tina is a headless content management system. Prior to 2.1.7, a path traversal vulnerability exists in the TinaCMS development server's media upload handler. The code at media.ts joins user-controlled path segments using path.join() without validating that the resulting path stays within the intended media directory. This allows writing files to arbitrary locations on the filesystem. This vulnerability is fixed in 2.1.7.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected products

Ssw Tinacms/cli< 2.1.7

Remediation

Fixed in
Ssw Tinacms/cli≥ 2.1.7

References

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Frequently asked

Is CVE-2026-28791 being actively exploited?

CVE-2026-28791 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.45%.

How severe is CVE-2026-28791?

CVE-2026-28791 has a CVSS 3.1 base score of 7.4, rated high. EPSS estimates a 0.45% probability of exploitation.

Which products are affected by CVE-2026-28791?

Affected products include Ssw Tinacms/cli.

How do I fix CVE-2026-28791?

Upgrade affected software to a fixed version, for example Ssw Tinacms/cli 2.1.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-28791 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.