CVE-2026-85665 Bruno through 4.1.0 Arbitrary File Read via Unconfined Body File Path
Attackers can read arbitrary local files by crafting malicious request body paths in Bruno API client collections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-85665?
CVE-2026-85665 is a high-severity path traversal vulnerability in usebruno bruno, published on 4 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Bruno versions through 4.1.0 fail to validate file paths in request body declarations, allowing attackers to read arbitrary local files by using parent-directory traversal segments. When a collection is executed, attackers can craft a request with a body:file path containing ../ sequences that resolve outside the collection directory, causing the application to read and exfiltrate arbitrary files to attacker-controlled endpoints.
Weakness: CWE-22
Which versions are affected by CVE-2026-85665?
How do I fix CVE-2026-85665?
No fix has been published for CVE-2026-85665 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-2026-85665 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85665 exists.
Sources
Also known as GHSA-c887-2p5m-25wx.