What is CVE-2026-43891?

CVE-2026-43891 is a high-severity vulnerability in Dgtlmoon Changedetection.io, classified under External Control of File Name or Path. CVSS score: 7.5/10. Published 2026-05-12.

How severe is CVE-2026-43891?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Dgtlmoon Changedetection.io

CVE-2026-43891

changedetection.io is a free open source web page change detection tool. Prior to 0.55.1, the vulnerability is caused by trusting attacker-controlled snapshot paths restored from backup files. The vulnerable flow starts in the backup resto…

EPSS: 0.000 (11.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Dgtlmoon Changedetection.io — versions < 0.55.1
Webtechnologies Changedetection

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Exploit, Mitigation, Not Applicable, Vendor Advisory)

Frequently asked questions

What is CVE-2026-43891?: CVE-2026-43891 is a high-severity vulnerability in Dgtlmoon Changedetection.io, classified under External Control of File Name or Path. CVSS score: 7.5/10. Published 2026-05-12.
How severe is CVE-2026-43891?: High severity. CVSS v3 base score is 7.5 out of 10.