What is CVE-2025-26900?

CVE-2025-26900 is a critical-severity vulnerability in Flexmls Flexmls® Idx, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-02-25.

How severe is CVE-2025-26900?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Flexmls Flexmls® Idx

CVE-2025-26900

Deserialization of Untrusted Data vulnerability in flexmls Flexmls® IDX flexmls-idx allows Object Injection.This issue affects Flexmls® IDX: from n/a through <= 3.14.27.

Vulnerability class: Insecure Deserialization

EPSS: 0.001 (29.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Flexmls Flexmls® Idx — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

patchstack.com/database/Wordpress/Plugin/flexmls-idx/vulnerability/wordpress-fl… (vdb-entry)

Frequently asked questions

What is CVE-2025-26900?: CVE-2025-26900 is a critical-severity vulnerability in Flexmls Flexmls® Idx, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-02-25.
How severe is CVE-2025-26900?: Critical severity. CVSS v3 base score is 9.8 out of 10.