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CVE-2026-53870

MEDIUM Exploitation: PoC
5.5
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-53870
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-06-10 21:23 UTC
Published
2026-06-17 17:57 UTC
Last updated
2026-06-17 18:39 UTC
Primary CWE
CWE-276
Incorrect Default Permissions
Vendor / Product
NousResearch / hermes-agent
Sources
cve.org  ·  NVD

Severity & Metrics

5.5 MEDIUM CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
NousResearch hermes-agent — 0 < 0.16.0, 0.16.0
Weakness (CWE)
CWESourceDescription
CWE-276 cna Incorrect Default Permissions
CVSS scores (2)
ScoreSeverityVersionSourceVector
6.8 MEDIUM 4.0 cna CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
5.5 MEDIUM 3.1 cna CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References (5)
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