# CVE-2026-85107: NousResearch hermes-agent resource exhaustion in resourceBufferFromUrl

Source: https://junglewise.ai/threats/cve-2026-85107-nousresearch-hermes-agent-resource-exhaustion-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-03. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-85107 · Severity: medium · CVSS 4.3 · Published 2026-09-03

hermes-agent is an Electron-based desktop application used by NousResearch. A flaw in the resourceBufferFromUrl function allows remote attackers to trigger excessive resource allocation, potentially causing denial of service or performance degradation on affected systems.

Technologies: [NousResearch Hermes Agent](https://junglewise.ai/threats/technologies/hermes-agent). Vendors: [NousResearch](https://junglewise.ai/threats/vendors/nousresearch).

## Quick answers

**Is CVE-2026-85107 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-85107 being exploited in the wild.

**How severe is CVE-2026-85107?** Medium severity, with a CVSS score of 4.3, published 3 September 2026.

**Which products and versions are affected?** NousResearch Hermes Agent 0.18.0.

**Is there a fix for CVE-2026-85107?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-85107 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-85107?** Check whether you run NousResearch Hermes Agent at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A resource exhaustion vulnerability exists in the resourceBufferFromUrl function within the Electron main process (apps/desktop/electron/main.ts) of hermes-agent. The vulnerability permits remote allocation of resources without proper bounds checking. The affected entry point (copyImageFromUrl) was present in v2026.8.3 but was removed by v2026.8.19 in favor of the native Electron event.sender.copyImageAt() implementation. Attack vectors and preconditions for exploitation of remaining vulnerable code paths are not fully detailed in available sources.

## Affected products

- NousResearch hermes-agent 0.18.0

## Timeline

- 2026-09-03: disclosed
- 2026-09-03: advisory

## References

- [https://vuldb.com/cve/CVE-2026-85107](https://vuldb.com/cve/CVE-2026-85107)
- [https://vuldb.com/submit/885135](https://vuldb.com/submit/885135)

## Related threats

- [NousResearch hermes-agent server-side request forgery in Link Title Fetch](https://junglewise.ai/threats/cve-2026-85106-nousresearch-hermes-agent-server-side-request-forgery-in-link)
- [NousResearch hermes-agent authorization bypass in Session Management](https://junglewise.ai/threats/cve-2026-85105-nousresearch-hermes-agent-authorization-bypass-in-session)
- [NousResearch hermes-agent denial of service in MCP Tool](https://junglewise.ai/threats/cve-2026-84289-nousresearch-hermes-agent-denial-of-service-in-mcp-tool)
- [NousResearch hermes-agent denial of service in ACP Prompt Workflow](https://junglewise.ai/threats/cve-2026-84288-nousresearch-hermes-agent-denial-of-service-in-acp-prompt)
- [NousResearch hermes-agent denial of service in session chat](https://junglewise.ai/threats/cve-2026-84287-nousresearch-hermes-agent-denial-of-service-in-session-chat)