CVE-2026-6608
Medium
Description
A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function add_text of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was fixed in commit 34eca62 for gradio_block_arena_named.py, but three other files were missed.
SeverityMedium
CVSS5.3
Exploit probability—
ProductFschat
PublishedApr 20, 2026
First seenApr 20, 2026
Weakness typeCWE-670CWE-670
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fschatPyPI | v ≤ 0.2.36 | — |
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