PT-2026-20837 · Unknown · Changedetection.Io

Minnggyuu · Published 2026-02-19 · Updated 2026-06-08 · CVE-2026-25527

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions changedetection.io versions prior to 0.53.2

Description changedetection.io is a web page change detection tool. Versions prior to 0.53.2 are susceptible to an unauthenticated local file read of application source files. The /static/<group>/<filename> API endpoint allows the group parameter to be set to "..", which results in the execution of send from directory("static/..", filename). This action elevates the base directory to /app/changedetectionio, potentially exposing source files like flask app.py.

Recommendations Update to version 0.53.2 or later.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-25527

GHSA-9JJ8-V89V-XJVW

Affected Products

Changedetection.Io

References · 8

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25527.json · Exploit
• https://github.com/dgtlmoon/changedetection.io/commit/9d38b4517364831889b5b0d7b3465fd060403fd4 · Patch
• https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-9jj8-v89v-xjvw · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-25527 · Security Note
• https://osv.dev/vulnerability/CVE-2026-25527 · Vendor Advisory
• https://twitter.com/CVEnew/status/2024501185693307305 · Twitter Post
• https://twitter.com/pdnuclei_bot/status/2064044820600078754 · Twitter Post
• https://t.me/CVEtracker/45134 · Telegram Post