What is CVE-2026-109686?

CVE-2026-109686 is a critical-severity vulnerability in Link Whisper Inc Free, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-10-15.

How severe is CVE-2026-109686?

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

Deserialization in Link Whisper Inc Free

CVE-2026-109686

Deserialization of Untrusted Data vulnerability in Link Whisper INC Link Whisper Free link-whisper allows Object Injection.This issue affects Link Whisper Free: from n/a through 0.9.7.

Vulnerability class: Insecure Deserialization

Published 2026-10-15 · last modified 2026-10-15.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Link Whisper Inc Free

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

patchstack.com/database/wordpress/plugin/link-whisper/vulnerability/wordpress-l… (vdb-entry)

Frequently asked questions

What is CVE-2026-109686?: CVE-2026-109686 is a critical-severity vulnerability in Link Whisper Inc Free, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-10-15.
How severe is CVE-2026-109686?: Critical severity. CVSS v3 base score is 9.8 out of 10.