CVE-2026-53869: Hermes Agent < 0.16.0 - DNS Rebinding Bypass via WebSocket Endpoints
NousResearch · hermes-agent
Fixed in 0.16.0 · Affected: NousResearch hermes-agent before 0.16.0 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 48% of scored CVEs
DescriptionCVE.org
Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling attackers to exploit DNS rebinding and inject malicious commands or read terminal output.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- NousResearch · hermes-agentbefore 0.16.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- NousResearch
- Published
- June 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-53869 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.