CVE-2026-100863: Server-Side Request Forgery (SSRF)

Heym versions 0.0.90 and earlier contain two server-side request forgery SSRF egress gaps, both remediated in app/services/ssrfguard.py in 0.0.91. First, the LLM image-edit input loader loadimagebytes fetched caller-controlled HTTP/HTTPS URLs with a bare httpx.get, applying only a scheme check an...

CVE-2026-100862: Cleartext Storage of Sensitive Information

heym, a workflow automation platform, stores and returns multiple capability secrets in plaintext in versions prior to 0.0.91. Affected secrets include webhook header-auth values returned in cleartext by GET /api/workflows/id and persisted unsanitized into execution history, MCP API keys stored a...

CVE-2026-100859: Server-Side Request Forgery (SSRF)

Heym before 0.0.106 contains a credential exfiltration vulnerability in the POST /api/credentials/test endpoint that allows collaborators with shared credential access to exfiltrate the credential owner's secret. Attackers can override the destination URL in the config parameter to cause the serv...

CVE-2026-101050: Improper Authentication

Heym before 0.0.53 fails to verify the X-Telegram-Bot-Api-Secret-Token header on Telegram webhook endpoints when credentialid is absent or secrettoken is empty. Remote unauthenticated attackers can post forged Telegram updates to trigger workflows with the owner's configured credentials and execu...

CVE-2026-101049: Improper Authentication

Heym before 0.0.53 fails to verify Slack request signatures when trigger nodes lack credential IDs or have empty signing secrets. Remote unauthenticated attackers can send forged Slack events to known webhook URLs to trigger workflows with the owner's credentials...

CVE-2026-84207

Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket...

CVE-2026-84207 Heym before 0.0.98 SSRF via WebSocket endpoints

Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket...

CVE-2026-84207

Heym before 0.0.98 is affected by a Server-Side Request Forgery (SSRF) vulnerability in its WebSocket Send and WebSocket Trigger workflow nodes. The root cause is the failure to apply SSRF egress guards to these nodes, allowing authenticated users to craft workflow nodes with arbitrary URLs and h...

CVE-2026-84207 Heym before 0.0.98 SSRF via WebSocket endpoints

Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket...

EUVD-2026-69295

Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket...

CVE-2026-84207 Heym before 0.0.98 SSRF via WebSocket endpoints

Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket...

PT-2026-84305

Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket...

CVE-2026-84207: Server-Side Request Forgery (SSRF)

Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket...

EUVD-2026-29868

Heym before 0.0.21 contains an authorization bypass vulnerability in workflow execution that allows authenticated users to execute arbitrary workflows by referencing victim workflow UUIDs without proper access validation. Attackers can create workflows with execute nodes or agent subWorkflowIds...

CVE-2026-45227 Heym < 0.0.21 Sandbox Escape via Python Introspection

Heym before 0.0.21 contains a sandbox escape vulnerability in the custom Python tool executor that allows authenticated workflow authors to bypass sandbox restrictions by using object-graph introspection primitives. Attackers can use Python introspection techniques to recover the unrestricted...

CVE-2026-45227 Heym < 0.0.21 Sandbox Escape via Python Introspection

Heym before 0.0.21 contains a sandbox escape vulnerability in the custom Python tool executor that allows authenticated workflow authors to bypass sandbox restrictions by using object-graph introspection primitives. Attackers can use Python introspection techniques to recover the unrestricted...

CVE-2026-45226

Heym before 0.0.21 contains an authorization bypass vulnerability in workflow execution that allows authenticated users to execute arbitrary workflows by referencing victim workflow UUIDs without proper access validation. Attackers can create workflows with execute nodes or agent subWorkflowIds...

CVE-2026-45225 Heym < 0.0.21 Path Traversal File Upload via upload_file()

Heym before 0.0.21 contains a path traversal vulnerability in the file upload endpoint that allows authenticated users to write attacker-controlled files to arbitrary locations by supplying a crafted filename with traversal sequences. Attackers can exploit the unvalidated filename parameter in th...

CVE-2026-45225

Heym before 0.0.21 contains a path traversal vulnerability in the file upload endpoint that allows authenticated users to write attacker-controlled files to arbitrary locations by supplying a crafted filename with traversal sequences. Attackers can exploit the unvalidated filename parameter in th...

CVE-2026-45225 Heym < 0.0.21 Path Traversal File Upload via upload_file()

Heym before 0.0.21 contains a path traversal vulnerability in the file upload endpoint that allows authenticated users to write attacker-controlled files to arbitrary locations by supplying a crafted filename with traversal sequences. Attackers can exploit the unvalidated filename parameter in th...