CVE-2025-64422Public exploitNetwork attack vector

Unlimited login attempts via spoofed client IP

Published Jan 5, 2026 · Updated Jan 5, 2026

Rate-limit bypass in Coolify 4.0.0-beta.434 through 4.0.0-beta.435 allows remote attackers to make unlimited login attempts. The /login endpoint trusts the client-supplied X-Forwarded-For value as its throttle key, so rotating that header assigns each request a fresh five-attempt bucket. Network access and an anonymous CSRF token and session cookie from GET /login are sufficient to brute-force user and administrator credentials; account takeover still requires finding valid credentials.

CVSS severity4.3
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Rate-limit bypass in Coolify 4.0.0-beta.434 through 4.0.0-beta.435 allows remote attackers to make unlimited login attempts. The /login endpoint trusts the client-supplied X-Forwarded-For value as its throttle key, so rotating that header assigns each request a fresh five-attempt bucket. Network access and an anonymous CSRF token and session cookie from GET /login are sufficient to brute-force user and administrator credentials; account takeover still requires finding valid credentials.

The record

CVE
CVE-2025-64422
Published
Jan 5, 2026
Updated
Jan 5, 2026
Vendor
coolLabs
Product
Coolify
Classifications
CWE-770, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.0.0-beta.434

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

coolLabs · Coolifyversion=>= 4.0.0-beta.434

Published CVSS scores

5.5GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
4.3NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1110Brute Force

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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