CVE-2026-28793
Path traversal in TinaCMS CLI dev server allows file read/write outside media dir.
Is CVE-2026-28793 being exploited?
Not confirmed. CVE-2026-28793 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.20% probability of exploitation in the next 30 days.
How severe is CVE-2026-28793?
CVE-2026-28793 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-28793?
Yes. A fix has been recorded for CVE-2026-28793. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-28793 affect?
CVE-2026-28793 affects TinaCMS CLI dev server (prior to 2.1.8). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28793?
Upgrade to TinaCMS 2.1.8 or newer.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary file read/write via /media endpoints on local TinaCMS dev server; data exposure risk.
Patch when possible
- affected< 2.1.8
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.