changedetection.io - No Rate Limiting on /login Enables Unlimited Password Brute-Force

published 2026-08-05 3mo ago modified 2026-10-24 18d ago also EUVD-2026-53202

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

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).

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CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 3mo ago (2026-08-05)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

dgtlmoon changedetection.io

Classification

Weakness

CWE-307 Improper Restriction of Excessive Authentication Attempts

References

github.com /dgtlmoon/changedetection.io
third-party-advisory

Sources

CVE List CVE-2026-71205
NVD CVE-2026-71205

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.