CVE-2026-45225 Heym < 0.0.21 Path Traversal File Upload via upload_file()
Authenticated attackers can exploit path traversal in Heym to write, read, or delete arbitrary files outside the intended storage directory.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45225?
CVE-2026-45225 is a high-severity path traversal vulnerability in heymrun heym, published on 12 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Heym before 0.0.21 contains a path traversal vulnerability in the file upload endpoint that allows authenticated users to write attacker-controlled files to arbitrary locations by supplying a crafted filename with traversal sequences. Attackers can exploit the unvalidated filename parameter in the upload_file() handler to bypass path restrictions and write, read, or delete files outside the intended storage directory.
Weakness: CWE-22
Which versions are affected by CVE-2026-45225?
How do I fix CVE-2026-45225?
No fix has been published for CVE-2026-45225 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-45225 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45225 exists.
Sources
Also known as GHSA-pxhc-h7q5-6qrg.