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TI-2026-20636 Aliases CVE-2026-25527GHSA-9jj8-v89v-xjvw

changedetection.io vulnerable to unauthenticated static path traversal

Priority LOW 32CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.

Summary

changedetection.io is a free open source web page change detection tool. In versions prior to 0.53.2, the `/static/<group>/<filename>` route accepts `group=".."`, which causes `send_from_directory("static/..", filename)` to execute. This moves the base directory up to `/app/changedetectionio`, enabling unauthenticated local file read of application source files (e.g., `flask_app.py`). Version 0.53.2 fixes the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01025 63rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed changedetection.io (dgtlmoon): 0.53.2changedetection.io (PyPI): 0.53.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
dgtlmoonchangedetection.iobefore 0.53.20.53.2Patch availableCNA
—changedetection.io (PyPI)before 0.53.20.53.2Patch availableGHSA-9jj8-v89v-xjvw
  • changedetection.io Vendordgtlmoon Affected before 0.53.2 Fixed in 0.53.2 Patch available CNA
  • changedetection.io (PyPI) Vendor— Affected before 0.53.2 Fixed in 0.53.2 Patch available GHSA-9jj8-v89v-xjvw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:*before 0.53.2Vulnerabledgtlmoon
  • cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:* Versions before 0.53.2 Vulnerable ·dgtlmoon

Remediation

  • Fix · CNA changedetection.io (dgtlmoon) Fixed in 0.53.2
  • Fix · GHSA-9jj8-v89v-xjvw changedetection.io (PyPI) Fixed in 0.53.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25527
  2. 2026-10-03 Alias added: GHSA-9jj8-v89v-xjvw

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • TI-2026-27619 changedetection.io has an Authentication Bypass via Decorator Ordering CVSS 3.1CRITICAL 9.8
  • TI-2026-23210 changedetection.io: Zip Slip vulnerability in the backup restore functionality CVSS 4.0HIGH 8.8
  • TI-2026-22073 changedetection.io Vulnerable to Server-Side Request Forgery (SSRF) via Watch URLs CVSS 3.1HIGH 8.6
  • TI-2026-26322 Changedetection.io Discloses Environment Variables via jq env Builtin in Include Filters CVSS 4.0HIGH 8.3
  • TI-2026-23185 changedetection.io: XPath - Arbitrary File Read via unparsed-text() CVSS 4.0HIGH 8.8
  • TI-2026-31955 changedetection.io: Arbitrary Local File Read via crafted backup restore CVSS 3.1HIGH 7.5
See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences