What is CVE-2026-13018?

CVE-2026-13018 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-09-28.

How severe is CVE-2026-13018?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Improper input validation in Google Chrome

CVE-2026-13018

Insufficient validation of untrusted input in Codecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to potentially perform out of bounds memory access via a crafted video file. (Chromium security severity: Low)

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-09-28 · last modified 2026-09-29.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

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

Google Chrome

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/487950074 (Permissions Required)

Frequently asked questions

What is CVE-2026-13018?: CVE-2026-13018 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2026-09-28.
How severe is CVE-2026-13018?: Medium severity. CVSS v3 base score is 4.3 out of 10.