# CVE-2026-14626: NousResearch hermes-agent HTTP API run_agent.py AIAgent.run_conversation denial of service

> Remote attackers can cause denial of service in NousResearch hermes-agent by manipulating the todos argument in the HTTP API.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Jul 2026
- **Updated:** 7 Jul 2026
- **Also known as:** GHSA-w268-f7gg-hc49

## What is CVE-2026-14626?

CVE-2026-14626 is a medium-severity denial of service vulnerability in NousResearch hermes-agent, published on 4 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A weakness has been identified in NousResearch hermes-agent up to 2026.4.30. The impacted element is the function AIAgent.run_conversation of the file run_agent.py of the component HTTP API. This manipulation of the argument todos causes denial of service. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2026-14626?


## How do I fix CVE-2026-14626?

No fix has been published for CVE-2026-14626 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14626 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14626 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14626 and fix it if it is affected.

What it is: CVE-2026-14626 is a medium-severity denial of service vulnerability in NousResearch hermes-agent, published on 4 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14626 exists.

Affected product: NousResearch hermes-agent. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-14626/ (Markdown: https://insights.sbomify.com/CVE-2026-14626/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14626
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14626
- OSV: https://osv.dev/vulnerability/CVE-2026-14626

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-14626/
Summaries are generated and may contain mistakes; the official description above is the record.