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CVE-2026-9354 NousResearch hermes-agent Slack Agent/Mattermost Agent escape output

🗓️ 24 May 2026 04:15:07Reported by VulDBType 
cvelist
 cvelist
🔗 www.cve.org👁 15 Views

CVE-2026-9354 affects NousResearch hermes-agent to 2026.4.16; remote output escaping via format message in Slack and Mattermost agents.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-9354
24 May 202604:15
attackerkb
CNNVD
Hermes Agent 安全漏洞
24 May 202600:00
cnnvd
CVE
CVE-2026-9354
24 May 202604:15
cve
EUVD
EUVD-2026-31566
24 May 202604:15
euvd
NVD
CVE-2026-9354
24 May 202605:16
nvd
Positive Technologies
PT-2026-42912
24 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-9354
27 May 202620:14
redhatcve
Vulnrichment
CVE-2026-9354 NousResearch hermes-agent Slack Agent/Mattermost Agent escape output
24 May 202604:15
vulnrichment
[
  {
    "vendor": "NousResearch",
    "product": "hermes-agent",
    "versions": [
      {
        "version": "2026.4.0",
        "status": "affected"
      },
      {
        "version": "2026.4.1",
        "status": "affected"
      },
      {
        "version": "2026.4.2",
        "status": "affected"
      },
      {
        "version": "2026.4.3",
        "status": "affected"
      },
      {
        "version": "2026.4.4",
        "status": "affected"
      },
      {
        "version": "2026.4.5",
        "status": "affected"
      },
      {
        "version": "2026.4.6",
        "status": "affected"
      },
      {
        "version": "2026.4.7",
        "status": "affected"
      },
      {
        "version": "2026.4.8",
        "status": "affected"
      },
      {
        "version": "2026.4.9",
        "status": "affected"
      },
      {
        "version": "2026.4.10",
        "status": "affected"
      },
      {
        "version": "2026.4.11",
        "status": "affected"
      },
      {
        "version": "2026.4.12",
        "status": "affected"
      },
      {
        "version": "2026.4.13",
        "status": "affected"
      },
      {
        "version": "2026.4.14",
        "status": "affected"
      },
      {
        "version": "2026.4.15",
        "status": "affected"
      },
      {
        "version": "2026.4.16",
        "status": "affected"
      }
    ],
    "cpes": [
      "cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*"
    ],
    "modules": [
      "Slack Agent/Mattermost Agent"
    ]
  }
]

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24 May 2026 04:15Current
CVSS 26.4
CVSS 3.16.5
CVSS 36.5
CVSS 46.9
EPSS0.00429
15