What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-27 · updated 2026-10-26
• Weakness: CWE-200

Description

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.

Affected products

• dgtlmoon changedetection.io: before 0.54.7 — fixed in 0.54.7

How to fix

Upgrade to a fixed version: dgtlmoon changedetection.io 0.54.7. Check the vendor advisory for mitigations.

References

• https://github.com/dgtlmoon/changedetection.io/commit/65517a9c74a0cbe1a4661314470b28131ef5557f
• https://github.com/dgtlmoon/changedetection.io/releases/tag/0.54.7
• https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-58r7-4wr5-hfx8
• https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-58r7-4wr5-hfx8

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