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CVE-2026-9354

NousResearch hermes-agent Slack Agent/Mattermost Agent escape output PUBLISHED

Description (CNA)

A vulnerability was detected in NousResearch hermes-agent up to 2026.4.16. The affected element is an unknown function of the component Slack Agent/Mattermost Agent. The manipulation of the argument format_message results in escaping of output. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected (CNA)

Vendor / productVersions
NousResearch / hermes-agentaffected 2026.4.0; affected 2026.4.1; affected 2026.4.2; affected 2026.4.3; affected 2026.4.4; affected 2026.4.5; affected 2026.4.6; affected 2026.4.7; affected 2026.4.8; affected 2026.4.9; affected 2026.4.10; affected 2026.4.11; affected 2026.4.12; affected 2026.4.13; affected 2026.4.14; affected 2026.4.15; affected 2026.4.16

CWE

CWE-116, CWE-74

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.