RCE in Dgtlmoon Changedetection.io
CVE-2026-29039
changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, the changedetection.io application allows users to specify XPath expressions as content filters via the include_filters field. These XPath expressions are processed using the elementpath library which implements XPath 3.0/3.1 specification. XPath 3.0 includes the unparsed-text() function which can read arbitrary files from the filesystem. The application does not validate or sanitize XPath expressions to block dangerous functions, allowing an attacker to read any file accessible to the application process. This issue has been patched in version 0.54.4.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (41.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Dgtlmoon Changedetection.io — versions < 0.54.4
- Webtechnologies Changedetection
Weakness classification (CWE)
References
- github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6fmw-82m7-jq6p (Exploit, Vendor Advisory)
- github.com/dgtlmoon/changedetection.io/commit/417d57e5749441e4be9acc4010369bded… (Patch)
- github.com/dgtlmoon/changedetection.io/releases/tag/0.54.4 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-29039?
- CVE-2026-29039 is a high-severity vulnerability in Dgtlmoon Changedetection.io, classified under Code Injection. CVSS score: 7.5/10. Published 2026-03-06.
- How severe is CVE-2026-29039?
- High severity. CVSS v3 base score is 7.5 out of 10.