CVE-2026-18775
NousResearch hermes-agent Browser Tooling browser_tool.py browser_snapshot server-side request forgery
Description
A vulnerability has been found in NousResearch hermes-agent up to 0.16.0. This vulnerability affects the function browser_snapshot of the file tools/browser_tool.py of the component Browser Tooling. Such manipulation leads to server-side request forgery. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
INFO
Published Date :
Aug. 4, 2026, 5:16 p.m.
Last Modified :
Aug. 4, 2026, 5:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update hermes-agent to the latest version.
- Review and sanitize all browser_snapshot inputs.
- Implement strict URL validation and allowlisting.
- Monitor network traffic for suspicious requests.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18775.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18775 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18775
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18775 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18775 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 04, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:*'], 'vendor': 'NousResearch', 'modules': ['Browser Tooling'], 'product': 'hermes-agent', 'versions': [{'status': 'affected', 'version': '0.1'}, {'status': 'affected', 'version': '0.2'}, {'status': 'affected', 'version': '0.3'}, {'status': 'affected', 'version': '0.4'}, {'status': 'affected', 'version': '0.5'}, {'status': 'affected', 'version': '0.6'}, {'status': 'affected', 'version': '0.7'}, {'status': 'affected', 'version': '0.8'}, {'status': 'affected', 'version': '0.9'}, {'status': 'affected', 'version': '0.10'}, {'status': 'affected', 'version': '0.11'}, {'status': 'affected', 'version': '0.12'}, {'status': 'affected', 'version': '0.13'}, {'status': 'affected', 'version': '0.14'}, {'status': 'affected', 'version': '0.15'}, {'status': 'affected', 'version': '0.16.0'}]}] Added Description A vulnerability has been found in NousResearch hermes-agent up to 0.16.0. This vulnerability affects the function browser_snapshot of the file tools/browser_tool.py of the component Browser Tooling. Such manipulation leads to server-side request forgery. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CWE CWE-918 Added Reference https://gist.github.com/YLChen-007/2e5bf7fa58113967807425032234cc89 Added Reference https://vuldb.com/cve/CVE-2026-18775 Added Reference https://vuldb.com/submit/856877 Added Reference https://vuldb.com/vuln/385785 Added Reference https://vuldb.com/vuln/385785/cti