CVE-2025-52558

ChangeDetection.io XSS in watch overview

7.0 HighFix available

changedetection.io is a free open source web page change detection, website watcher, restock monitor and notification service. Prior to version 0.50.4, errors in filters from website page change detection watches were not being filtered resulting in a cross-site scripting (XSS) vulnerability. This issue has been patched in version 0.50.4

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Active

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: High

Exploit likelihood

0.59%Up 0.6 points since Jun 24, 2025

What each source reports

CVE List Score used 7.0

ChangeDetection.io XSS in watch overview

Record: CVE-2025-52558
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2025-18945 7.0

Record: EUVD-2025-18945
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-hwpg-x5hw-vpv9 7.0

ChangeDetection.io XSS in watch overview

Impact

XSS - Errors in filters from website page change detection watches were not being filtered.

Patches

0.50.4

Record: GHSA-hwpg-x5hw-vpv9
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 7.0

Record: CVE-2025-52558
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-79
Updated: 2026-11-02

OSV 7.0

ChangeDetection.io XSS in watch overview

Record: CVE-2025-52558
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-hwpg-x5hw-vpv9 7.0

ChangeDetection.io XSS in watch overview

Impact

XSS - Errors in filters from website page change detection watches were not being filtered.

Patches

0.50.4

Record: GHSA-hwpg-x5hw-vpv9
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-79
Updated: 2026-11-02

OSVPYSEC-2026-1241 7.0

ChangeDetection.io XSS in watch overview

Impact

XSS - Errors in filters from website page change detection watches were not being filtered.

Patches

0.50.4

Record: PYSEC-2026-1241
CVSS 4.0: 7.0 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

Affected products

dgtlmoon changedetection.io

Affected packages

Affected packages
Package	Affected	Fixed
`changedetection-io` PyPI	through 0.50.3	0.50.4
`changedetection-io` PyPI	before 0.50.4, plus listed versions 0.38.20.390.39.10.39.100.39.10.post1 Show 45 moreShow less 0.39.10.post20.39.110.39.120.39.130.39.13.10.39.140.39.14.10.39.150.39.160.39.170.39.17.10.39.17.20.39.180.39.190.39.19.10.39.20.39.200.39.20.10.39.20.20.39.20.30.39.20.40.39.210.39.21.10.39.220.39.22.10.39.30.39.40.39.50.39.60.39.70.39.80.39.90.40.00.40.0.10.40.0.20.40.0.30.40.0.40.40.1.00.40.1.10.40.20.40.30.410.41.10.420.42.1	0.50.4

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-52558 is a high vulnerability (CVSS 7.0) in Dgtlmoon Changedetection.io, published June 23, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.59%, the 48th percentile. Fixed in changedetection-io 0.50.4.

References

This page doesn't list everything

Left out here: 76 versions. The JSON record has them.