CVE-2026-4503 Unauthenticated Insecure Direct Object Reference (IDOR) Vulnerability in Langflow Desktop Image Download Endpoint
Unauthenticated attackers can view other users' images via an insecure direct object reference in the image download endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4503?
CVE-2026-4503 is a high-severity vulnerability in IBM Langflow Desktop, published on 30 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow could allow an unauthenticated user to view other users' images due to an indirect object reference through a user-controlled key.
Weakness: CWE-639
Which versions are affected by CVE-2026-4503?
It affects 1 product.
Products include Langflow Langflow Desktop.
How do I fix CVE-2026-4503?
No fix has been published for CVE-2026-4503 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4503 being exploited?
There is no known exploitation of CVE-2026-4503 in the wild and no public exploit code.
Other vulnerabilities in IBM Langflow Desktop
- CVE-2026-6543 Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint
- CVE-2026-3340 Server-Side Request Forgery (SSRF) in Langflow URL Component
- CVE-2026-3345 Path Traversal and Arbitrary File Write Vulnerability in IBM Langflow Desktop API v2 File Upload Endpoint
- CVE-2026-4502 Arbitrary File Write and Remote Code Execution Vulnerability in Langflow v2 API
- CVE-2026-3346 Stored Cross-Site Scripting (XSS) in Langflow Markdown Rendering via rehypeRaw
Sources
Also known as GHSA-f8v3-8wm7-h9qr.