CVE-2026-110873CWE-863broken-access-control

CVE-2026-110873

High · published October 15, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
11.0
In the wild
Unconfirmed
What it is

Heym from 0.0.55 before 0.0.121 contains a privilege escalation vulnerability that allows shared collaborators to overwrite a workflow's error_workflow_id because the field is missing from OWNER_ONLY_EXECUTION_FIELDS. Attackers can point the error workflow to their own workflow with an HTTP node, and when the parent workflow errors the owner's decrypted credentials are injected and exfiltrated.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00213 · 11.0th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-10-15T03:17Z
References (2)
https://github.com/heymrun/heym/security/advisories/GHSA-c3f4-2mrj-jfqr · [email protected]https://www.vulncheck.com/advisories/heym-0.0.55-before-0.0.121-credential-theft-via-error-workflow-id-field · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 22:53Z
    Heym 0.0.55 before 0.0.121 Credential Theft via error_workflow_id Field
    cvelistv5
  • 14 OCT 22:53Z
    Heym 0.0.55 before 0.0.121 Credential Theft via error_workflow_id Field
    cvelistv5