# CVE-2026-111936: Sigma File Manager through 2.2.0 SSRF via Extension Download Commands

> Attackers can exploit SSRF in Sigma File Manager to read internal network responses via malicious extension downloads.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **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:** No
- **Published:** 19 Oct 2026
- **Updated:** 22 Oct 2026
- **Also known as:** GHSA-37hh-79v8-v8vr

## What is CVE-2026-111936?

CVE-2026-111936 is a medium-severity server-side request forgery vulnerability in aleksey-hoffman Sigma File Manager, published on 19 Oct 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

Sigma File Manager through 2.2.0 contains a server-side request forgery vulnerability because validate_remote_url() in security.rs never checks resolved IP addresses for extension download commands. A malicious extension or catalog entry can use hostnames resolving to loopback, private, or cloud metadata addresses to read internal responses via files written to the extension directory.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-111936?


## How do I fix CVE-2026-111936?

No fix has been published for CVE-2026-111936 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-111936 being exploited?

There is no known exploitation of CVE-2026-111936 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-111936 and fix it if it is affected.

What it is: CVE-2026-111936 is a medium-severity server-side request forgery vulnerability in aleksey-hoffman Sigma File Manager, published on 19 Oct 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: There is no known exploitation of CVE-2026-111936 in the wild and no public exploit code.

Affected product: aleksey-hoffman Sigma File Manager. 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-2026-111936/ (Markdown: https://insights.sbomify.com/CVE-2026-111936/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111936
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111936
- OSV: https://osv.dev/vulnerability/CVE-2026-111936

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-111936/
Summaries are generated and may contain mistakes; the official description above is the record.