GHSA-99f9-j8r3-p853

Suggest an improvement
Source
https://github.com/advisories/GHSA-99f9-j8r3-p853
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-99f9-j8r3-p853/GHSA-99f9-j8r3-p853.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-99f9-j8r3-p853
Aliases
Published
2026-06-17T21:34:38Z
Modified
2026-07-13T16:42:53Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 6.8 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Hermes Agent creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644)
Details

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.

Database specific 
{
    "cwe_ids":  [
        "CWE-276"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-19T14:48:48Z",
    "nvd_published_at":  "2026-06-17T19:18:10Z",
    "severity":  "MODERATE"
}
References

Affected packages

PyPI / hermes-agent

Package

Name
hermes-agent
View open source insights on deps.dev
Purl
pkg:pypi/hermes-agent

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.16.0

Affected versions

0.*
0.13.0
0.14.0
0.15.0
0.15.1
0.15.2

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-99f9-j8r3-p853/GHSA-99f9-j8r3-p853.json"