Is CVE-2026-25527 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-25527, but active exploitation has not been confirmed.

Can CVE-2026-25527 be exploited remotely?

Yes. CVE-2026-25527 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-25527?

CVE-2026-25527 has a CVSS score of 5.3 (MEDIUM) and an EPSS exploitation probability of 0.06%.

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MEDIUMPOC

CVE-2026-25527

CWE-22Published: February 19, 2026· Updated: Feb 19, 2026

5.3

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.3th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-25527 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A proof-of-concept (PoC) exploit exists for CVE-2026-25527. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.