Is CVE-2026-25527 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-25527 being exploited in the wild.

How severe is CVE-2026-25527?

Medium severity, with a CVSS score of 5.3, published 20 July 2026.

Which products and versions are affected?

changedetection.io (PyPI) < 0.53.2, ECOSYSTEM:introduced=0,fixed=0.53.2.

Is there a fix for CVE-2026-25527?

Yes. changedetection.io (PyPI): upgrade to 0.53.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-25527 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-25527?

Check whether you run changedetection.io (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-25527: dgtlmoon changedetection.io path traversal in static content route

Q: Is there a fix for CVE-2026-25527?

Yes. changedetection.io (PyPI): upgrade to 0.53.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-25527 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-25527?

Check whether you run changedetection.io (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-25527 · Severity: medium · CVSS 5.3 · Published 2026-07-20

changedetection.io, a tool used for monitoring website changes, is vulnerable to an unauthorized file access flaw. An attacker can exploit this to read the application's internal source code files without needing a password. This could allow unauthorized parties to study the application's logic to find further weaknesses or sensitive configuration details.

Technologies: changedetection.io (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2026-25527 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-25527 being exploited in the wild.
How severe is CVE-2026-25527?: Medium severity, with a CVSS score of 5.3, published 20 July 2026.
Which products and versions are affected?: changedetection.io (PyPI) < 0.53.2, ECOSYSTEM:introduced=0,fixed=0.53.2.
Is there a fix for CVE-2026-25527?: Yes. changedetection.io (PyPI): upgrade to 0.53.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-25527 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-25527?: Check whether you run changedetection.io (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

changedetection.io (PyPI): upgrade to 0.53.2 or later
```
pip install "changedetection.io>=0.53.2"
```

Technical details

A path traversal vulnerability exists in the `/static/<group>/<filename>` route of changedetection.io due to insufficient input sanitization in `flask_app.py`. The `group` parameter is processed using a regular expression that allows dots, enabling an attacker to use `..` to traverse up from the intended `static/` directory. By setting `group` to `..`, the `send_from_directory` function executes relative to the application root, allowing unauthenticated remote attackers to read internal Python source files (e.g., `flask_app.py`). The exploit is limited to the application package directory as the `filename` parameter rejects slashes, preventing access to arbitrary system files like `/etc/passwd`. This issue is resolved in version 0.53.2.

Affected products

dgtlmoon changedetection.io < 0.53.2

Identifiers

CVE-2026-25527
GHSA-9jj8-v89v-xjvw
PYSEC-2026-2124

Timeline

2026-02-16: disclosed: Initial disclosure by reporter
2026-02-19: advisory: NVD publication date
2026-07-20: patched: GitHub Advisory published and reviewed

References

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