What’s Vulnerable › Vulnerabilities

CVE-2026-10221: NousResearch hermes-agent run_agent.py _compress_context injection

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-01 · updated 2026-07-22
• Weakness: CWE-74

Description

A vulnerability was identified in NousResearch hermes-agent up to 0.12.0. Affected by this vulnerability is the function _compress_context of the file run_agent.py. The manipulation leads to injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• NousResearch hermes-agent: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+6)

References

• https://gist.github.com/YLChen-007/d343fcfe2c009cd45f56dc475fd5ac03
• https://vuldb.com/cve/CVE-2026-10221
• https://vuldb.com/submit/822019
• https://vuldb.com/vuln/367500
• https://vuldb.com/vuln/367500/cti
• https://vuldb.com/submit/822019

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