Tinacms Cli
CVE-2026-28791
HIGH
GHSA-5hxf-c7j4-279c
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
AnalysisAI
High severity vulnerability in TinaCMS. ## Affected Package
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | TinaCMS development server versions prior to 2.1.7 with media upload handler enabled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Severity: High (7.4/10.0) No EPSS data available yet HIGH RISK: Remotely exploitable without authentication — internet-facing instances are directly vulnerable Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | This vulnerability can be exploited remotely without authentication or user interaction, making it suitable for automated scanning and mass exploitation. Successful exploitation leads to remote code execution, allowing the attacker to run arbitrary commands on the target system, install malware, or pivot to other network resources. … |
| Remediation | Security advisories: - https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c Detailed patch versions, workarounds, and compensating controls in full report. |
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Within 24 hours: Inventory all TinaCMS instances across the organization and assess business criticality. …
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External POC / Exploit Code
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