CVE-2025-52558Network attack vector

Browser script execution via unescaped filter errors

Published Jun 23, 2025 · Updated Jun 24, 2025

Cross-site scripting in changedetection.io before 0.50.4 allows remote attackers to run script in a user's browser through a filter error. The watch overview marks compile_error_texts output safe, so an unescaped include-filter error is inserted into the page as HTML. Exploitation requires a user to open the affected watch overview, where the injected script executes in that user's browser session.

CVSS severity7.0
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in changedetection.io before 0.50.4 allows remote attackers to run script in a user's browser through a filter error. The watch overview marks compile_error_texts output safe, so an unescaped include-filter error is inserted into the page as HTML. Exploitation requires a user to open the affected watch overview, where the injected script executes in that user's browser session.

The record

CVE
CVE-2025-52558
Published
Jun 23, 2025
Updated
Jun 24, 2025
Vendor
changedetection.io
Product
changedetection.io
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=< 0.50.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

changedetection.io · changedetection.ioversion=< 0.50.4

Published CVSS scores

7.0GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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