What is CVE-2026-30230?

CVE-2026-30230 is a high-severity vulnerability in Flintsh Flare, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-03-06.

How severe is CVE-2026-30230?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Flintsh Flare

CVE-2026-30230

Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version 1.7.2, the thumbnail endpoint does not validate the password for password‑protected files. It checks ownership/admin for private files but skips password verification, allowing thumbnail access without the password. This issue has been patched in version 1.7.2.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.004 (30.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Flintsh Flare — versions < 1.7.2

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-30230?: CVE-2026-30230 is a high-severity vulnerability in Flintsh Flare, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-03-06.
How severe is CVE-2026-30230?: High severity. CVSS v3 base score is 7.5 out of 10.