# CVE-2026-11322: Hermes WebUI before 0.51.221 Path Traversal via Symlink Workspace Bypass

> Attackers can read sensitive host files like SSH keys by exploiting symlink handling in Hermes WebUI workspace APIs.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 4 Jun 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-wp87-gw3h-3hx6

## What is CVE-2026-11322?

CVE-2026-11322 is a high-severity path traversal vulnerability in nesquena Hermes WebUI, published on 4 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Hermes WebUI prior to v0.51.221 contains a path traversal vulnerability that allows attackers to escape the workspace boundary by supplying symlinks that resolve to files or directories outside the designated workspace root. Attackers can exploit the workspace file and listing APIs, which resolve symlink targets without enforcing that the final path remains within the workspace, to read external host files accessible to the server process and disclose sensitive data such as SSH keys, cloud credentials, or application tokens.

Weakness: CWE-59 (Improper Link Resolution Before File Access)

## Which versions are affected by CVE-2026-11322?


## How do I fix CVE-2026-11322?

Upgrade to a fixed version.

## Is CVE-2026-11322 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11322 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11322 and fix it if it is affected.

What it is: CVE-2026-11322 is a high-severity path traversal vulnerability in nesquena Hermes WebUI, published on 4 Jun 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-2026-11322 exists.

Affected product: nesquena Hermes WebUI. 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-2026-11322/ (Markdown: https://insights.sbomify.com/CVE-2026-11322/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11322
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11322
- OSV: https://osv.dev/vulnerability/CVE-2026-11322

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-11322/
Summaries are generated and may contain mistakes; the official description above is the record.