EUVD-2026-87823

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 webhookurl / flaresolverrurl using an unguarded HTTP client, bypassing the SSRF egress guard that...

CVE-2026-100858

The heym software, in versions prior to 0.0.109 , is vulnerable to a Server-Side Request Forgery (SSRF) in the Slack, Discord, and Crawler workflow nodes . The root cause is the use of an unguarded HTTP client that issues requests to URLs provided in user-created credentials (specifically webhook...

EUVD-2026-87824

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-2026-100859 Heym before 0.0.106 Credential Exfiltration via URL Override

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...

PT-2026-99484

Name of the Vulnerable Software and Affected Versions heym versions prior to 0.0.91 Description A sandbox escape exists in the expression engine's DotList map/filter and fallback resolver. Authenticated users can execute arbitrary Python code by crafting workflow expressions that utilize dunder...

CVE-2026-100864: Improper Control of Generation of Code

heym before 0.0.91 contains a sandbox escape vulnerability in the expression engine's DotList map/filter and fallback resolver that allows authenticated users to execute arbitrary Python code. Attackers can craft workflow expressions using dunder attribute access through item expressions or the...

PT-2026-99557

Name of the Vulnerable Software and Affected Versions Heym versions prior to 0.0.53 Description Insufficient verification of the X-Telegram-Bot-Api-Secret-Token header occurs on Telegram webhook endpoints when the credential id is absent or the secret token is empty. This allows remote...

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-2026-100863: 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...

PT-2026-99482

Name of the Vulnerable Software and Affected Versions heym versions prior to 0.0.91 Description This workflow automation platform stores and returns multiple capability secrets in plaintext. Affected secrets include webhook header-auth values, which are returned in cleartext by the 'GET...

PT-2026-99483

Name of the Vulnerable Software and Affected Versions Heym versions prior to 0.0.91 Description Two server-side request forgery SSRF gaps exist in the software. First, the LLM image-edit input loader load image bytes fetches HTTP/HTTPS URLs provided by the caller using a bare httpx.get, which onl...

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...

PT-2026-99485

Name of the Vulnerable Software and Affected Versions Heym versions prior to 0.0.53 Description Multiple security issues exist in the software. The workflow condition evaluator uses the Python eval function without an effective sandbox, enabling users who can edit workflow branch/condition nodes ...

PT-2026-99481

Name of the Vulnerable Software and Affected Versions heym versions prior to 0.0.105 Description Authenticated users can bypass Server-Side Request Forgery SSRF protections—a flaw where an attacker induces a server to make requests to an unintended location—due to a failure in applying egress...

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-2026-100859: 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...

PT-2026-99480

Name of the Vulnerable Software and Affected Versions heym versions prior to 0.0.105 Description The Redis workflow node in backend/app/services/node execution/nodes/redis node.py fails to properly handle the result of credential authorization lookups. When the get accessible credential function...

CVE-2026-100860: Not Failing Securely

heym before 0.0.105 does not act on the result of the credential authorization lookup in the Redis workflow node backend/app/services/nodeexecution/nodes/redisnode.py. When getaccessiblecredential returns None — because the credential ID does not exist or the caller is not authorized to use it —...

CVE-2026-100865: Improper Control of Generation of Code

Heym before 0.0.53 evaluates workflow condition expressions using Python's eval with insufficient sandboxing in the workflow executor service. Authenticated users can edit workflow condition nodes or import malicious templates to execute arbitrary Python and OS commands as the backend process use...

PT-2026-99479

Name of the Vulnerable Software and Affected Versions Heym versions prior to 0.0.106 Description An issue exists in the 'POST /api/credentials/test' endpoint that allows collaborators with shared credential access to exfiltrate the secret of the credential owner. An attacker can override the...