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Vulnerability record · CVE-2026-33981 · published 27 March 2026

CVE-2026-33981: Webtechnologies changedetection information exposure vulnerability

Webtechnologies · Changedetection

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.

8.3 CVSS 4.0 High EPSS 0.48% · top 60.8% CWE-200 · Information exposure
8.3CVSS 4.0 base score
0.48%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/dgtlmoon/changedetection.io/commit/65517a9c74a0cbe1a4661314470b28131ef5557f Patch
https://github.com/dgtlmoon/changedetection.io/releases/tag/0.54.7 ProductRelease Notes
https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-58r7-4wr5-hfx8 ExploitVendor Advisory
https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-58r7-4wr5-hfx8 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-35490Webtechnologies changedetection incorrect authorization vulnerabilitychangedetection.io is a free open source web page change detection tool. Prior to 0.54.8, the @login_optionally_required decorator is placed before (…EPSS 0.64%8.8CVE-2026-29065Webtechnologies changedetection path traversal vulnerabilitychangedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, a Zip Slip vulnerability in the backup restore func…EPSS 0.56%8.8CVE-2026-29039Webtechnologies changedetection code injection vulnerabilitychangedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, the changedetection.io application allows users to …EPSS 0.51%8.6CVE-2026-27696Webtechnologies changedetection server-side request forgery (ssrf) vulnerabilitychangedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, changedetection.io is vulnerable to Server-Side…EPSS 0.48%8.2CVE-2026-41895Webtechnologies changedetection xml external entity (xxe) vulnerabilitychangedetection.io is a free open source web page change detection tool. In 0.54.9 and earlier, xpath_filter() switches to XML mode for XML/RSS conte…EPSS 0.37%7.5CVE-2026-43891Webtechnologies changedetection vulnerabilitychangedetection.io is a free open source web page change detection tool. Prior to 0.55.1, the vulnerability is caused by trusting attacker-controlled…EPSS 0.50%7.1CVE-2026-35000Webtechnologies changedetection vulnerabilityChangeDetection.io versions prior to 0.54.7 contain a protection bypass vulnerability in the SafeXPath3Parser implementation that allows attackers to…EPSS 0.47%6.1CVE-2026-29038Webtechnologies changedetection cross-site scripting vulnerabilitychangedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, there is a reflected cross-site scripting (XSS) vul…EPSS 0.34%

Source: NIST National Vulnerability Database (record CVE-2026-33981), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.