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

CVE-2026-33981 · Severity: medium · CVSS 6.5 · Published 2026-03-27

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.

Technologies: changedetection.io (PyPI), Webtechnologies Changedetection. Vendors: PyPI, Webtechnologies.

Quick answers

Is CVE-2026-33981 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-33981 being exploited in the wild.
How severe is CVE-2026-33981?
Medium severity, with a CVSS score of 6.5, published 27 March 2026.
Which products and versions are affected?
changedetection.io (PyPI) ECOSYSTEM:introduced=0,fixed=0.54.7.
Is there a fix for CVE-2026-33981?
Yes. changedetection.io (PyPI): upgrade to 0.54.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-33981?
Check whether you run changedetection.io (PyPI) or Webtechnologies Changedetection at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • changedetection.io (PyPI): upgrade to 0.54.7 or later
    pip install "changedetection.io>=0.54.7"

Affected products

  • changedetection.io (PyPI) ECOSYSTEM:introduced=0,fixed=0.54.7
  • Webtechnologies Changedetection

Identifiers

  • CVE-2026-33981
  • GHSA-58r7-4wr5-hfx8
  • PYSEC-2026-2130

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.