CVE-2026-30942

Name
CVE-2026-30942
Description
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/FlintSH/Flare/commit/cd894cc480619aef958be5de72b1445222fd8d36
security-advisories@github.com https://github.com/FlintSH/Flare/releases/tag/v1.7.3
security-advisories@github.com https://github.com/FlintSH/Flare/security/advisories/GHSA-h639-p7m9-mpgp

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:flintsh:flare:*:*:*:*:*:*:*:* flare >= None < 1.7.3

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
flare edge-community 0.20.0-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.18.1-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.17.3-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.17.0-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.16.3-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.16.0-r1 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.16.0-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.15.16-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.15.12-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.15.9-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.15.8-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.15.7-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare edge-community 0.15.6-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable
flare 3.23-community 0.17.3-r0 Krassy Boykinov <kboykinov@teamcentrixx.com> possibly vulnerable