CVE-2026-82020CWE-552

CVE-2026-82020

Medium · published August 29, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
36.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
7.6 · CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00435 · 36.8th percentile
Weakness
CWE-552 · Files or Directories Accessible to External Parties
Published
2026-08-29T00:20Z
References (5)
https://github.com/NousResearch/hermes-agent/commit/2b67e96aec2aa2abd5e94b544cda8e564c75f9f5 · [email protected]https://github.com/NousResearch/hermes-agent/commit/da28d5d113956dcf803d5cff552a120740a96a59 · [email protected]https://github.com/NousResearch/hermes-agent/pull/45821 · [email protected]https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.19 · [email protected]https://www.vulncheck.com/advisories/hermes-agent-credential-store-overwrite-via-file-write-tool · [email protected]
EPSS history
Timeline
  • 30 AUG 16:19Z
    EPSS moved — → 0%
    epss
  • 28 AUG 18:47Z
    Hermes Agent 0.16.0 < 0.17.0 Credential Store Overwrite via File-Write Tool
    cvelistv5