CVE-2026-41895: changedetection.io: XXE vulnerability in the changedetection.io project

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-12 · updated 2026-10-26
Weakness: CWE-611

Description

changedetection.io is a free open source web page change detection tool. In 0.54.9 and earlier, xpath_filter() switches to XML mode for XML/RSS content and creates etree.XMLParser(strip_cdata=False) without explicitly disabling external entity resolution, external DTD loading, or network-backed entity lookup. The helper then parses untrusted XML bytes directly with etree.fromstring(...).

Affected products

dgtlmoon changedetection.io: through 0.54.9

References

https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-v7cp-2cx9-x793

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