CVE-2026-33981 HIGH

CVE-2026-33981: Changedetection.io Discloses Environment Variables via jq env Builtin in Include Filters

Vendor Dgtlmoon
Product changedetection.io
Weakness CWE-200 · Info exposure
Published March 27, 2026
Last update March 30, 2026

CVSS base score

8.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 27, 2026 CVE published
March 30, 2026 Record updated