Information disclosure in Dgtlmoon Changedetection.io
CVE-2026-33981
changedetection.io is a free open source web page change detection tool. Prior to 0.54.7, the `jq:` and `jqraw:` include filter expressions allow use of the jq `env` builtin, which reads all process environment variables and stores them as the watch snapshot. An authenticated user (or unauthenticated user when no password is set, the default) can leak sensitive environment variables including `SALTED_PASS`, `PLAYWRIGHT_DRIVER_URL`, `HTTP_PROXY`, and any secrets passed as env vars to the container. Version 0.54.7 patches the issue.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.2% 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 < 0.54.7
- Webtechnologies Changedetection
Weakness classification (CWE)
References
- github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-58r7-4wr5-hfx8 (Exploit, Vendor Advisory)
- github.com/dgtlmoon/changedetection.io/commit/65517a9c74a0cbe1a4661314470b28131… (Patch)
- github.com/dgtlmoon/changedetection.io/releases/tag/0.54.7 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-33981?
- CVE-2026-33981 is a medium-severity vulnerability in Dgtlmoon Changedetection.io, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-03-27.
- How severe is CVE-2026-33981?
- Medium severity. CVSS v3 base score is 6.5 out of 10.