Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromises the upstream repository can propagate malicious code to every host that installs the affected catalog entry, with no further action required by the operator.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 28 Aug 2026 21:45:00 +0000
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Nousresearch hermes-agent |
Fri, 28 Aug 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromises the upstream repository can propagate malicious code to every host that installs the affected catalog entry, with no further action required by the operator. | |
| Title | Hermes Agent 0.18.2 < 0.19.0 MCP Catalog Supply Chain RCE via Mutable Branch Reference | |
| Weaknesses | CWE-494 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-28T19:59:12.130Z
Reserved: 2026-08-27T21:39:20.459Z
Link: CVE-2026-82021
No data.
Status : Received
Published: 2026-08-28T20:20:14.470
Modified: 2026-08-28T20:20:14.470
Link: CVE-2026-82021
No data.
OpenCVE Enrichment
Updated: 2026-08-28T22:30:17Z
Weaknesses