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CVE-2026-43891

CVE-2026-43891 · changedetection.io: Arbitrary Local File Read via crafted backup restore

This page contains facts from public vulnerability sources. Check the original advisory before updating.

changedetection.io is a free open source web page change detection tool. Prior to 0.55.1, the vulnerability is caused by trusting attacker-controlled snapshot paths restored from backup files. The vulnerable flow starts in the backup restore logic. When a backup ZIP is restored, the application extracts the archive and copies each restored watch UUID directory directly into the live datastore using shutil.copytree(entry.path, dst_dir). This preserves attacker-controlled files inside the restored watch directory, including history.txt. After restore, the application parses history.txt in the watch history property and returns the contents of the targeted local file. This vulnerability is fixed in 0.55.1.

CVSS 7.5 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • changedetection.io

    Versions
    • < 0.55.1: Affected

    No fix published

  • changedetection-io PyPI

    Versions
    • 0.38.2
    • 0.39
    • 0.39.1
    • 0.39.10
    • 0.39.10.post1
    • 0.39.10.post2
    • 0.39.11
    • 0.39.12
    • 0.39.13
    • 0.39.13.1
    • 0.39.14
    • 0.39.14.1
    • 0.39.15
    • 0.39.16
    • 0.39.17
    • 0.39.17.1
    • 0.39.17.2
    • 0.39.18
    • 0.39.19
    • 0.39.19.1
    • 0.39.2
    • 0.39.20
    • 0.39.20.1
    • 0.39.20.2
    • 0.39.20.3
    • 0.39.20.4
    • 0.39.21
    • 0.39.21.1
    • 0.39.22
    • 0.39.22.1
    • 0.39.3
    • 0.39.4
    • 0.39.5
    • 0.39.6
    • 0.39.7
    • 0.39.8
    • 0.39.9
    • 0.40.0
    • 0.40.0.1
    • 0.40.0.2
    • 0.40.0.3
    • 0.40.0.4
    • 0.40.1.0
    • 0.40.1.1
    • 0.40.2
    • 0.40.3
    • 0.41
    • 0.41.1
    • 0.42
    • 0.42.1
    • 0.42.2
    • 0.42.3
    • 0.43.1
    • 0.43.2
    • 0.44
    • 0.44.1
    • 0.45
    • 0.45.1
    • 0.45.11
    • 0.45.12
    • 0.45.13
    • 0.45.14
    • 0.45.15
    • 0.45.16
    • 0.45.17
    • 0.45.18
    • 0.45.19
    • 0.45.2
    • 0.45.20
    • 0.45.21
    • 0.45.22
    • 0.45.23
    • 0.45.24
    • 0.45.25
    • 0.45.26
    • 0.45.3
    • 0.45.4
    • 0.45.5
    • 0.45.6
    • 0.45.7
    • 0.45.7.1
    • 0.45.7.2
    • 0.45.7.3
    • 0.45.8
    • 0.45.8.1
    • 0.45.9
    • 0.46.0
    • 0.46.1
    • 0.46.2
    • 0.46.3
    • 0.46.4
    • 0.47.0
    • 0.47.1
    • 0.47.2
    • 0.47.3
    • 0.47.4
    • 0.47.5
    • 0.47.6
    • 0.48.0
    • 0.48.1
    • 0.48.2
    • 0.48.3
    • 0.48.4
    • 0.48.5
    • 0.48.6
    • 0.49.0
    • 0.49.1
    • 0.49.10
    • 0.49.12
    • 0.49.13
    • 0.49.14
    • 0.49.15
    • 0.49.16
    • 0.49.17
    • 0.49.18
    • 0.49.2
    • 0.49.3
    • 0.49.4
    • 0.49.5
    • 0.49.6
    • 0.49.7
    • 0.49.8
    • 0.49.9
    • 0.50.1
    • 0.50.10
    • 0.50.11
    • 0.50.12
    • 0.50.13
    • 0.50.14
    • 0.50.15
    • 0.50.16
    • 0.50.17
    • 0.50.18
    • 0.50.19
    • 0.50.2
    • 0.50.20
    • 0.50.21
    • 0.50.22
    • 0.50.23
    • 0.50.24
    • 0.50.25
    • 0.50.26
    • 0.50.27
    • 0.50.28
    • 0.50.29
    • 0.50.3
    • 0.50.30
    • 0.50.31
    • 0.50.32
    • 0.50.33
    • 0.50.34
    • 0.50.35
    • 0.50.37
    • 0.50.38
    • 0.50.39
    • 0.50.4
    • 0.50.40
    • 0.50.41
    • 0.50.42
    • 0.50.43
    • 0.50.5
    • 0.50.6
    • 0.50.7
    • 0.50.8
    • 0.50.9
    • 0.51.0
    • 0.51.1
    • 0.51.2
    • 0.51.3
    • 0.51.4
    • 0.52.1
    • 0.52.2
    • 0.52.3
    • 0.52.4
    • 0.52.5
    • 0.52.6
    • 0.52.7
    • 0.52.8
    • 0.52.9
    • 0.53.1
    • 0.53.2
    • 0.53.3
    • 0.53.4
    • 0.53.5
    • 0.53.6
    • 0.53.7
    • 0.54.1
    • 0.54.10
    • 0.54.2
    • 0.54.3
    • 0.54.4
    • 0.54.5
    • 0.54.6
    • 0.54.7
    • 0.54.8
    • 0.54.9
    Affected ranges
    • ECOSYSTEM: < 0.55.1

    Update to 0.55.1

Original sources

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