Improper input validation in Apple macOS
CVE-2026-5915
Insufficient validation of untrusted input in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Low)
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Apple macOS
- Google Chrome — versions 147.0.7727.55
- Linux Kernel
- Microsoft Windows
Weakness classification (CWE)
References
- chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
- issues.chromium.org/issues/494341335 (Permissions Required)
Frequently asked questions
- What is CVE-2026-5915?
- CVE-2026-5915 is a high-severity vulnerability in Apple macOS, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2026-04-08.
- How severe is CVE-2026-5915?
- High severity. CVSS v3 base score is 8.1 out of 10.