critical severity · exploited in the wild · published 2026-07-27
An unauthenticated attacker can send crafted serialized data through the agent polling protocol and run arbitrary code on the server. It is being exploited in the wild.
Fixed in: 2026.1.3
CVE: CVE-2026-63077
Source: blog.jetbrains.com
You are affected if the installed version is older than 2026.1.3. Check the version you have and update to 2026.1.3 or later. The fixed version is verified against a vendor or advisory source.
FixLane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the FixLane MCP server and call get_fix_prompt with incident id 109 and your operating system.