CVE-2026-30942
Description
A flaw was found in Flare, a file sharing platform. An authenticated path traversal vulnerability exists in the /api/avatars/[filename] endpoint, allowing a logged-in user to read arbitrary files from the application container. This occurs because the filename parameter is not properly sanitized, enabling specially crafted sequences to bypass directory restrictions. If open registration is enabled, an attacker can self-register and exploit this vulnerability, leading to sensitive information disclosure.
Statement
This IMPORTANT path traversal vulnerability in Flare allows authenticated users to read arbitrary files from the /app/ directory via the avatars endpoint. Exploitation requires authentication (PR:L), but instances with default open registration allow attackers to self-register and immediately exploit. Impact is high confidentiality loss; no integrity or availability impact. Fixed in version 1.7.3.
Mitigation
Disable open registration to prevent unauthenticated attackers from creating accounts to exploit this vulnerability. This limits exploitation to existing authenticated users until the upgrade to 1.7.3 can be applied.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
