Information Disclosure in changedetection-io (CVE-2026-33981)
Summary
Vulnerability in changedetection-io (CVE-2026-33981). Risk of unauthorized operations or information disclosure. Exploitable via env. Mitigation: upgrade to 0.54.7 or later.
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-33981 has been found in changedetection-io.
Attackers can target a specific entry point like env over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade changedetection-io to 0.54.7 or later.
If unsure, ask your IT team or search "changedetection-io CVE-2026-33981" on the vendor's site.
CVE-2026-33981 (changedetection-io) — CWE-200
Attack surface: env / SALTED_PASS / PLAYWRIGHT_DRIVER_URL / HTTP_PROXY
Patched: 0.54.7 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Information disclosure (CWE-200) exists in changedetection-io. Attackers reach the vulnerable code path via env.
Check the vendor advisory for the affected versions of changedetection-io. Attack surface: env / SALTED_PASS / PLAYWRIGHT_DRIVER_URL / HTTP_PROXY.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 0.54.7.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'changedetection-io' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'changedetection-io' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
changedetection-ioを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade changedetection-io to 0.54.7ステージング環境で 0.54.7 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- patch github.com
- web github.com