CVE-2026-100859Heym before 0.0.106 Credential Exfiltration via URL Override
Updated under an hour ago ()
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It affects heymrun heym. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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 server to send decrypted authentication secrets to attacker-controlled endpoints.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
heymrun heym heymrun:heym (from the name) | before 0.0.106; 0.0.106 not affected | CNA record |
References
- https://github.com/heymrun/heym/security/advisories/GHSA-39qx-wp7x-69rqvendor-advisory
- https://www.vulncheck.com/advisories/heym-before-0.0.106-credential-exfiltration-via-url-overridethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.