Skip to content
Heist/ feed
High

heym before 0.0.109 Server-Side Request Forgery via Workflow Nodes

Type: advisorySource: Official CVE List1 source record

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).

Announced Source revision 1
Original source ↗

CVE-2026-100858

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-100858

heym

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "heymrun",
    "product": "heym",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "0.0.109",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "0.0.109",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-100858

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#4576 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement