CVE-2026-41899Public exploitNetwork attack vector

Unauthenticated Discord webhook abuse via unvalidated feedback forwarding

Published Jul 6, 2026 · Updated Jul 6, 2026

Unrestricted feedback forwarding in coolLabs Coolify before 4.0.0-beta.474 allows remote attackers to abuse a Discord webhook. The unauthenticated route invokes OtherController::feedback, which forwards the unvalidated content field directly to the configured webhook without throttling. Exploitation requires a reachable instance with the feedback Discord webhook configured; attackers can inject content and exhaust webhook limits.

CVSS severity6.5
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted feedback forwarding in coolLabs Coolify before 4.0.0-beta.474 allows remote attackers to abuse a Discord webhook. The unauthenticated route invokes OtherController::feedback, which forwards the unvalidated content field directly to the configured webhook without throttling. Exploitation requires a reachable instance with the feedback Discord webhook configured; attackers can inject content and exhaust webhook limits.

The record

CVE
CVE-2026-41899
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
coolLabs
Product
Coolify
Classifications
CWE-306, CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 6, 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.474

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

coolLabs · Coolifyversion=< 4.0.0-beta.474

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

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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