CVE-2026-82020

Hermes Agent 0.16.0 < 0.17.0 Credential Store Overwrite via File-Write Tool

MEDIUM
6.8
CVSS Score
Published: August 28, 2026 at 06:47 PM UTC
Updated: September 8, 2026 at 08:39 PM UTC
1 product affected across 1 vendorHermes Agent

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages directing the agent's file-write tooling to overwrite the credential store without triggering any path-based protection, enabling credential tampering or unauthorized access.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.16.0 ≤ v < 0.17.02026.6.5 ≤ v < 2026.6.190.16.02026.6.5
Affected range stops below 0.17.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 2026.6.19, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-552

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