# CVE-2026-22257: Salvo is vulnerable to stored XSS in the list_html function by uploading files with malicious names

> Attackers can execute arbitrary scripts via malicious filenames in Salvo's file listing feature if public uploads are enabled.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 8 Jan 2026
- **Updated:** 8 Jan 2026
- **Also known as:** GHSA-54m3-5fxr-2f3j

## What is CVE-2026-22257?

CVE-2026-22257 is a high-severity cross-site scripting vulnerability in salvo-rs salvo, published on 8 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Salvo is a Rust web backend framework. Prior to version 0.88.1, the function list_html generates a file view of a folder without sanitizing the files or folders names, this may potentially lead to XSS in cases where a website allow the access to public files using this feature and anyone can upload a file. This issue has been patched in version 0.88.1.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-22257?

2 open source packages ship an affected version, including salvo. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `salvo` | crates.io | All versions | 0.88.1 |
| `salvo` | crates.io | All versions | 0.88.1 |

Products: Salvo Salvo.

## How do I fix CVE-2026-22257?

Upgrade salvo to 0.88.1 or later.

## Is CVE-2026-22257 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22257 exists.

## Other vulnerabilities in salvo-rs salvo

- [CVE-2026-22256](https://insights.sbomify.com/CVE-2026-22256/): Salvo is vulnerable to reflected XSS in the list_html function (high 8.8)
- [CVE-2026-33241](https://insights.sbomify.com/CVE-2026-33241/): Salvo Affected by Denial of Service via Unbounded Memory Allocation in Form Data Parsing (high 8.7)
- [CVE-2026-33242](https://insights.sbomify.com/CVE-2026-33242/): Salvo has a Path Traversal in salvo-proxy::encode_url_path allows API Gateway Bypass (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22257 and fix it if it is affected.

What it is: CVE-2026-22257 is a high-severity cross-site scripting vulnerability in salvo-rs salvo, published on 8 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22257 exists.

Affected packages and fixed versions:
- salvo (crates.io): affected all versions; fixed in 0.88.1
- salvo (crates.io): affected all versions; fixed in 0.88.1

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-2026-22257/ (Markdown: https://insights.sbomify.com/CVE-2026-22257/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22257
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22257
- OSV: https://osv.dev/vulnerability/CVE-2026-22257

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-22257/
Summaries are generated and may contain mistakes; the official description above is the record.