{"id":"CVE-2026-100862","title":"heym, a workflow automation platform, stores and returns multiple capability secrets in plaintext in versions prior to 0.0.91","summary":"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 pers…","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-312"],"vendor":"heymrun","product":"heym","affected":["heym < 0.0.91"],"published":"2026-09-27","updated":"2026-09-27","sourceUpdated":"2026-09-27T02:17:25.963","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100862","references":[{"url":"https://github.com/heymrun/heym/security/advisories/GHSA-6x65-w7q7-wg93","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/heym-before-0.0.91-multiple-secrets-plaintext-storage","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-27T02:41:45.582Z","slug":"CVE-2026-100862","body":"## Overview\n\nheym, 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 as a plaintext column, returned in config/list responses, and accepted via the ?key= query string so they leak into logs, proxies and Referer headers), portal session tokens (stored and validated by plaintext equality with a 168-hour TTL), workflow execution JWTs (stored in full and re-listed by GET .../execution-tokens), Discord interaction tokens (the full interaction body is stored in execution history), and global variables. A user with read access to a workflow, share/team membership, or anyone able to read the database, a backup, or logs can recover these secrets and replay them to execute workflows or act as the secret owner.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}