# CVE-2026-11752: Armeria: External Control of File Name or Path in xDS SDS DataSource

> A compromised xDS control plane can read arbitrary local files and environment variables on the client host via unrestricted filename resolution in Armeria.

- **Severity:** Medium 5.9 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Jun 2026
- **Updated:** 22 Jun 2026
- **Also known as:** GHSA-hgw6-8c77-v4gq

## What is CVE-2026-11752?

CVE-2026-11752 is a medium-severity path traversal vulnerability in LY Corporation Armeria, published on 19 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability has been identified in armeria-xds versions 1.38.0 through 1.39.0, where DataSourceStream in the xDS module can resolve control-plane-supplied filenames and environment variables without restriction, allowing a compromised or semi-trusted xDS control plane to read arbitrary local files and environment variables on the xDS client host.

## Which versions are affected by CVE-2026-11752?

2 open source packages ship an affected version, including com.linecorp.armeria:armeria-xds.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `com.linecorp.armeria:armeria-xds` | Maven | All versions | 1.40.0 |
| `com.linecorp.armeria:armeria-xds` | Maven | All versions | 1.40.0 |

## How do I fix CVE-2026-11752?

Upgrade com.linecorp.armeria:armeria-xds to 1.40.0 or later.

## Is CVE-2026-11752 being exploited?

There is no known exploitation of CVE-2026-11752 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11752 and fix it if it is affected.

What it is: CVE-2026-11752 is a medium-severity path traversal vulnerability in LY Corporation Armeria, published on 19 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-11752 in the wild and no public exploit code.

Affected packages and fixed versions:
- com.linecorp.armeria:armeria-xds (Maven): affected all versions; fixed in 1.40.0
- com.linecorp.armeria:armeria-xds (Maven): affected all versions; fixed in 1.40.0

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-2026-11752/ (Markdown: https://insights.sbomify.com/CVE-2026-11752/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11752
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11752
- OSV: https://osv.dev/vulnerability/CVE-2026-11752

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-11752/
Summaries are generated and may contain mistakes; the official description above is the record.