What is CVE-2026-15775?

CVE-2026-15775 is a medium-severity vulnerability in Google Chrome, classified under Origin Validation Error. CVSS score: 6.5/10. Published 2026-07-14.

How severe is CVE-2026-15775?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Google Chrome

CVE-2026-15775

Inappropriate implementation in V8 in Google Chrome prior to 150.0.7871.125 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: High)

Published 2026-07-14 · last modified 2026-07-15.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.3th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Google Chrome — versions 150.0.7871.125

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0353146… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/531319201 (Permissions Required)

Frequently asked questions

What is CVE-2026-15775?: CVE-2026-15775 is a medium-severity vulnerability in Google Chrome, classified under Origin Validation Error. CVSS score: 6.5/10. Published 2026-07-14.
How severe is CVE-2026-15775?: Medium severity. CVSS v3 base score is 6.5 out of 10.