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CVE-2026-53870— Hermes Agent < 0.16.0 - Sensitive File Permission Vulnerability in Store Files

Quick assessment

Affected
NousResearch hermes-agent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

nousresearch hermes-agent是nousresearch的人工智能代理框架。 nousresearch hermes-agent 0.16.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于以全局可读权限创建response_store.db和webhook_subscriptions.json文件，暴露对话历史记录和HMAC密钥，可能允许本地攻击者直接读取这些文件获取敏感数据。

CVSS 5.5 · Medium EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 2

VendorProduct Version RangeStatus
NousResearch hermes-agent < 0.16.0 affected
0.16.0 unaffected
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I. Basic Information for CVE-2026-53870

Vulnerability Information
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Vulnerability Title
Hermes Agent < 0.16.0 - Sensitive File Permission Vulnerability in Store Files
Source: CVE Program / CVE List V5
Vulnerability Description
Hermes Agent before 0.16.0 creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644), exposing conversation history and HMAC secrets to local users. Attackers with local filesystem access can read these files directly to obtain sensitive data including conversation history, tool payloads, prompts, and per-route HMAC secrets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
nousresearch hermes-agent 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nousresearch hermes-agent是nousresearch的人工智能代理框架。 nousresearch hermes-agent 0.16.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于以全局可读权限创建response_store.db和webhook_subscriptions.json文件，暴露对话历史记录和HMAC密钥，可能允许本地攻击者直接读取这些文件获取敏感数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NousResearch hermes-agent 0 ~ 0.16.0 -

II. Public POCs for CVE-2026-53870

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III. Intelligence Information for CVE-2026-53870

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Patches & Fixes for CVE-2026-53870 (3)

Vendor Advisories for CVE-2026-53870 (1)

Vendor Pages for CVE-2026-53870 (1)

IV. Related Vulnerabilities

Same product: hermes-agent
Same vendor: NousResearch
Same weakness: CWE-276

V. Comments for CVE-2026-53870

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