# CVE-2026-57489: FileRise: AUTH_BYPASS reverse-proxy header trust without source IP validation enables full authentication bypass

> Unauthenticated attackers can bypass authentication and gain admin access by spoofing proxy headers if the backend is directly reachable and proxy auth is enabled.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Oct 2026
- **Updated:** 20 Oct 2026
- **Also known as:** GHSA-98pg-w3jp-r8fv

## What is CVE-2026-57489?

CVE-2026-57489 is a high-severity authentication bypass vulnerability in error311 FileRise, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.16.0, FileRise deployments with AUTH_BYPASS enabled trust the configured reverse-proxy identity header without verifying that the request originated from FR_TRUSTED_PROXIES. When the backend application port is reachable directly, an unauthenticated attacker can supply X-Remote-User and obtain a session for the asserted account, including an administrator account, without a password or MFA. The flaw is limited to deployments that enable proxy-header authentication and expose an untrusted path to the backend. This issue is fixed in version 3.16.0.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2026-57489?


## How do I fix CVE-2026-57489?

No fix has been published for CVE-2026-57489 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-57489 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57489 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-57489 and fix it if it is affected.

What it is: CVE-2026-57489 is a high-severity authentication bypass vulnerability in error311 FileRise, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57489 exists.

Affected product: error311 FileRise. 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-2026-57489/ (Markdown: https://insights.sbomify.com/CVE-2026-57489/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-57489
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-57489
- OSV: https://osv.dev/vulnerability/CVE-2026-57489

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-57489/
Summaries are generated and may contain mistakes; the official description above is the record.