CVE-2026-100858
heym before 0.0.109 contains a server-side request forgery vulnerability in the Slack, Discord, and…
- Risk score
- 44/100
- CVSS
- 6.8 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 27 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- heym before 0.0.109 contains a server-side request forgery vulnerability in the Slack, Discord, and Crawler workflow nodes. These nodes issue HTTP requests to URLs taken from user-created credentials (webhook_url / flaresolverr_url) using an unguarded HTTP client, bypassing the SSRF egress guard that already protects …
- Affected
- See advisory
- Fix
- Upgrade the product to 0.0.109 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.8 medium
References
Original description
heym before 0.0.109 contains a server-side request forgery vulnerability in the Slack, Discord, and Crawler workflow nodes. These nodes issue HTTP requests to URLs taken from user-created credentials (webhook_url / flaresolverr_url) using an unguarded HTTP client, bypassing the SSRF egress guard that already protects the HTTP, WebSocket, and MCP nodes; the credential API validates only that the URL is non-empty. Any registered user can create a credential pointing at an internal address and execute a workflow, causing the backend to reach loopback, private, link-local, or cloud-metadata endpoints and return the full response body in the node output (non-blind SSRF).
Last activity 27 Sep 2026. Patch Forecast updates every hour.