Medium 6.5Published Mar 10, 2026

CVE-2026-30942Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools.

Updated under an hour ago (2026-10-19 09:50 UTC)

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It affects flintsh flare. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for flintsh flare

Exploited in the last 30 days

Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to 1.7.3, an authenticated path traversal vulnerability in /api/avatars/[filename] allows any logged-in user to read arbitrary files from within the application container. The filename URL parameter is passed to path.join() without sanitization, and getFileStream() performs no path validation, enabling %2F-encoded ../ sequences to escape the uploads/avatars/ directory and read any file accessible to the nextjs process under /app/. Authentication is enforced by Next.js middleware. However, on instances with open registration enabled (the default), any attacker can self-register and immediately exploit this. This vulnerability is fixed in 1.7.3.

CVSS: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

flintsh flare flintsh:flare	before 1.7.3	NVD

References

https://github.com/FlintSH/Flare/commit/cd894cc480619aef958be5de72b1445222fd8d36patch
https://github.com/FlintSH/Flare/releases/tag/v1.7.3product, release-notes
https://github.com/FlintSH/Flare/security/advisories/GHSA-h639-p7m9-mpgpexploit, mitigation, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.