Detections
Analytics

SCA: security update for hermes-agent (GHSA-4pqm-j46f-795x)

high Tenable Cloud Security Plugin ID 443588

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows
 remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for
 WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling attackers
 to exploit DNS rebinding and inject malicious commands or read terminal output. (CVE-2026-53869)

Solution

Update the hermes-agent library and its related packages to version 0.16.0 or later.

See Also

https://github.com/advisories/GHSA-4pqm-j46f-795x

Plugin Details

Severity: High

ID: 443588

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 6/19/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-53869

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/17/2026

Vulnerability Publication Date: 6/17/2026

Reference Information

CVE: CVE-2026-53869

cwe: CWE-306