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Fencer Vulns
high 7.0

CVE-2025-52558 json

ChangeDetection.io XSS in watch overview

published 2025-06-23 16 mo ago modified 2026-07-07 4 mo ago also EUVD-2025-18945 , GHSA-hwpg-x5hw-vpv9 , PYSEC-2026-1241

cvss
7.0
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

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

Patch / fix

  • pypi changedetection-io 0.50.4
  • changedetection changedetection 0.50.4
  • webtechnologies changedetection 0.50.4

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.0 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
CNA 4.0 7.0 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/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

Affected packages

ecosystem package affected fixed in
pypi changedetection-io
<0.50.4
0.50.4

Affected products

  • dgtlmoon changedetection.io

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.