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CVE-2026-18774: Server-Side Request Forgery in NousResearch hermes-agent

0
Medium
VulnerabilityCVE-2026-18774cvecve-2026-18774
Published: 08/04/2026 (08/04/2026, 16:00:11 UTC)
Source: CVE Database V5
Vendor/Project: NousResearch
Product: hermes-agent

Description

CVE-2026-18774 is a server-side request forgery (SSRF) vulnerability in NousResearch hermes-agent up to version 0.16.0. The flaw exists in the save_url_image function of the xAI Image Generation Provider component, allowing remote attackers to manipulate server requests. Exploit code has been published, but no vendor response or patch is currently available. The vulnerability has a medium severity rating with a CVSS score of 5.3.

CVSS v4.0

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected software

GitHub Actionsmore threats →ai
nousresearch/hermes-agent
pkg:github/nousresearch/hermes-agent
Affected versions
=0.1=0.2=0.3=0.4=0.5=0.6=0.7=0.8=0.9=0.10=0.11=0.12=0.13=0.14=0.15=0.16.0
CPE configurations
cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/04/2026, 16:46:12 UTC

Technical Analysis

This vulnerability affects the save_url_image function in the agent/image_gen_provider.py file of the NousResearch hermes-agent product, versions 0.1 through 0.16.0. It allows an attacker to perform server-side request forgery, potentially causing the server to make unintended HTTP requests. The vulnerability can be exploited remotely without user interaction and requires low privileges. Although exploit code is publicly available, the vendor has not responded or provided a fix. No official remediation or patch has been published as of the disclosure date.

Potential Impact

The SSRF vulnerability allows remote attackers to induce the server to make arbitrary HTTP requests, which could lead to information disclosure or interaction with internal systems not otherwise accessible. The impact is rated medium with limited scope and complexity, as indicated by the CVSS vector. There is no evidence of active exploitation in the wild at this time.

Mitigation Recommendations

No official fix or patch is currently available from the vendor. Since the vendor did not respond to the disclosure, users should consider implementing network-level controls to restrict outbound requests from the affected component or isolate the hermes-agent service until a patch is released. Monitor official vendor channels for updates and apply any future patches promptly. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-08-04T07:35:41.048Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a72133ebf8831d5391ad46c

Added to database: 08/04/2026, 16:28:46 UTC

Last enriched: 08/04/2026, 16:46:12 UTC

Last updated: 08/04/2026, 21:02:55 UTC

Views: 7

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