CVE-2024-32651Public exploitNetwork attack vector

Unauthenticated command execution via unsandboxed notification templates

Published Apr 25, 2024 · Updated Feb 13, 2025

Server-side template injection in changedetection.io 0.45.20 and earlier allows remote attackers to execute commands through notification templates. The notification processor renders attacker-controlled notification_body and notification_title values with an unrestricted Jinja2 Environment, allowing template expressions to reach Python built-ins. Password protection is not enabled or enforced by default; exploitation requires creating or editing a watch and supplying a malicious Notifications template.

CVSS severity10.0
Critical
EPSS probability83.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in changedetection.io 0.45.20 and earlier allows remote attackers to execute commands through notification templates. The notification processor renders attacker-controlled notification_body and notification_title values with an unrestricted Jinja2 Environment, allowing template expressions to reach Python built-ins. Password protection is not enabled or enforced by default; exploitation requires creating or editing a watch and supplying a malicious Notifications template.

The record

CVE
CVE-2024-32651
Published
Apr 25, 2024
Updated
Feb 13, 2025
Vendor
changedetection.io
Product
changedetection.io
Classifications
CWE-1336, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=<= 0.45.20
  2. Affected versionversion=0.45.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

changedetection.io · changedetection.ioversion=<= 0.45.20; version=0.45.20

Published CVSS scores

10.0GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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-1336Improper Neutralization of Special Elements Used in a Template Engine
T1190Exploit Public-Facing Application

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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