Path Traversal in changedetection-io (CVE-2026-29065)
Summary
Path traversal in changedetection-io (CVE-2026-29065). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 0.54.4 or later.
Original description
The description as published by the source.
Summary
A Zip Slip vulnerability in the backup restore functionality allows arbitrary file overwrite via path traversal in uploaded ZIP archives.
Details
A Zip Slip vulnerability in the backup restore functionality allows arbitrary file overwrite via path traversal in uploaded ZIP archives. The application uses zipfile.extractall() without validating entry paths, allowing ../ sequences to escape the extraction directory.
Vulnerable Code (lines 50-53):
def restore_backup(self, filename):
with zipfile.ZipFile(filename, 'r') as zip_ref:
# VULNERABLE: No path validation before extraction
zip_ref.extractall(self.datastore_path)
The extractall() function preserves the relative paths stored within the ZIP archive. When a malicious ZIP contains entries with ../ path traversal sequences, these files are extracted outside the intended directory.
| Path in ZIP | Target File | Impact |
|---|---|---|
| ../secret.txt | Flask secret key | Session forgery, auth bypass |
| ../changedetection.json | App settings | Disable password, inject backdoor |
| ../url-watches.json | Watch index | Inject malicious watches |
| ../{uuid}/watch.json | Watch config | Modify any watch |
Attacker uploads ZIP via the backup restore functionality at /backups/restore
Application extracts files without validation, writing attacker content to sensitive locations
PoC
Step 1: Create Malicious ZIP
import zipfile
import json
with zipfile.ZipFile("zipslip.zip", "…
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-2026-29065 has been found in changedetection-io.
Risk of unauthorized operations or information disclosure.
What to do: upgrade changedetection-io to 0.54.4 or later.
If unsure, ask your IT team or search "changedetection-io CVE-2026-29065" on the vendor's site.
CVE-2026-29065 (changedetection-io) — CWE-22
Patched: 0.54.4 — 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.
Path traversal (CWE-22) exists in changedetection-io.
Check the vendor advisory for the affected versions of changedetection-io.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 0.54.4.
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
-
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 0.54.4ステージング環境で 0.54.4 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 nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com