CVE-2026-101049 (GCVE-0-2026-101049)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:28 – Updated: 2026-09-27 16:33
VLAI
Title
Heym before 0.0.53 Slack Webhook Signature Verification Bypass
Summary
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.
Severity
8.3 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version CPE status
heymrun heym Affected: 0 , < 0.0.53 (semver)
Unaffected: 0.0.53 (semver)
guessed Create a notification for this product.
Date Public
2026-06-26 00:00
Credits
okcomputerfan mbakgun
Show details on NVD website
To clipboard 

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          "name": "GitHub Security Advisory (GHSA-pm6h-x3h5-j38h)",
          "tags": [
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          "url": "https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h"
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    "datePublished": "2026-09-27T16:28:28.128Z",
    "dateReserved": "2026-09-27T15:48:49.472Z",
    "dateUpdated": "2026-09-27T16:33:42.372Z",
    "state": "PUBLISHED"
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                "modifiedAttackRequirements": "NOT_DEFINED",
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                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
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                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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                "providerUrgency": "NOT_DEFINED",
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                "valueDensity": "NOT_DEFINED",
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}



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