CVE-2026-27696HIGH 8.6EPSS p35.4%

CVE-2026-27696CVE-2026-27696

Description

changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, changedetection.io is vulnerable to Server-Side Request Forgery (SSRF) because the URL validation function `is_safe_valid_url()` does not validate the resolved IP address of watch URLs against private, loopback, or link-local address ranges. An authenticated user (or any user when no password is configured, which is the default) can add a watch for internal network URLs. The application fetches these URLs server-side, stores the response content, and makes it viewable through the web UI — enabling full data exfiltration from internal services. Version 0.54.1 contains a fix for the issue.

Scoring

CVSS 3.18.6 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
EPSS0.45% probability of exploitation · percentile 35.4% · 2026-06-19T12:03:05Z
Published2026-02-25
Last modified2026-02-26

Underlying weaknesses· 1

CWE-918

References

  1. https://github.com/dgtlmoon/changedetection.io/commit/fe7aa38c651d73fe5f41ce09855fa8f97193747b
  2. https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m
  3. https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m

1

TypeTargetConfidenceTier
WeaknessServer-Side Request Forgery (SSRF)cwe-9180%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.