# CVE-2026-10548: Auth bypass in hermes-agent

> Local attackers can bypass authentication in the credential pool synchronization to escalate privileges or access sensitive credentials.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jun 2026
- **Updated:** 3 Jun 2026
- **Also known as:** GHSA-g28j-ffjc-vcrh

## What is CVE-2026-10548?

CVE-2026-10548 is a medium-severity authentication bypass vulnerability in NousResearch hermes-agent, published on 2 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A security flaw has been discovered in NousResearch hermes-agent up to 2026.4.23. This affects the function _sync_anthropic_entry_from_credentials_file of the file agent/credential_pool.py of the component Credential Pool Synchronization. The manipulation results in improper authentication. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-10548?


## How do I fix CVE-2026-10548?

No fix has been published for CVE-2026-10548 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-10548 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10548 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-10548 and fix it if it is affected.

What it is: CVE-2026-10548 is a medium-severity authentication bypass vulnerability in NousResearch hermes-agent, published on 2 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10548 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-2026-10548/ (Markdown: https://insights.sbomify.com/CVE-2026-10548/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-10548
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-10548
- OSV: https://osv.dev/vulnerability/CVE-2026-10548

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-10548/
Summaries are generated and may contain mistakes; the official description above is the record.