# CVE-2026-95271: dgtlmoon changedetection.io authentication timing attack

Source: https://junglewise.ai/threats/cve-2026-95271-a-vulnerability-has-been-found-in-dgtlmoon-changedetection-io-up  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-95271 · Severity: high · CVSS 7.3 · Published 2026-09-22

changedetection.io is a website monitoring tool that tracks changes to web pages. A timing attack vulnerability in its authentication mechanism allows remote attackers to bypass authentication or guess credentials by measuring response times, potentially gaining unauthorized access to sensitive monitoring data and configuration.

Technologies: [Dgtlmoon Changedetection.Io](https://junglewise.ai/threats/technologies/dgtlmoon-changedetection-io). Vendors: [Dgtlmoon](https://junglewise.ai/threats/vendors/dgtlmoon).

## Quick answers

**Is CVE-2026-95271 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-95271 being exploited in the wild.

**How severe is CVE-2026-95271?** High severity, with a CVSS score of 7.3, published 22 September 2026.

**Which products and versions are affected?** Dgtlmoon Changedetection.Io up to 0.60.7.

**Is there a fix for CVE-2026-95271?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-95271 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-95271?** Check whether you run Dgtlmoon Changedetection.Io 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.

## Technical details

A timing attack vulnerability exists in the check_authentication function in changedetectionio/flask_app.py due to improper authentication validation that leaks timing information. An attacker can exploit this via remote network access without authentication to discover valid credentials by analyzing response time differences, compromising the authentication hook component.

## Affected products

- dgtlmoon changedetection.io up to 0.60.7

## Timeline

- 2026-09-22: disclosed: Vulnerability disclosed publicly via GitHub; vendor did not respond
- 2026-09-22: other: Exploit/proof-of-concept code made available

## References

- [https://github.com/herantong/cve/blob/main/changedetection.io_timing-attack_CWE-208.md](https://github.com/herantong/cve/blob/main/changedetection.io_timing-attack_CWE-208.md)
- [https://vuldb.com/cve/CVE-2026-95271](https://vuldb.com/cve/CVE-2026-95271)

## Related threats

- [dgtlmoon changedetection.io server-side request forgery in preview endpoint](https://junglewise.ai/threats/cve-2026-95656-a-vulnerability-was-found-in-dgtlmoon-changedetection-io-up-to)
- [dgtlmoon changedetection.io path traversal in visual_selector_data](https://junglewise.ai/threats/cve-2026-95273-a-vulnerability-was-determined-in-dgtlmoon-changedetection-io-up)