What is CVE-2026-13812?

CVE-2026-13812 is a medium-severity vulnerability in Apple Iphone OS, classified under Improper Input Validation. CVSS score: 4.7/10. Published 2026-06-30.

How severe is CVE-2026-13812?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Improper input validation in Apple Iphone OS

CVE-2026-13812

Insufficient validation of untrusted input in Chrome for iOS in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker who convinced a user to engage in specific UI gestures to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: High)

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

Published 2026-06-30 · last modified 2026-07-01.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (8.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.3% 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: 0.002 · change: 0.000

Affected products

Apple Iphone OS
Google Chrome — versions 150.0.7871.47

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352… (Vendor Advisory)
issues.chromium.org/issues/508293203 (Permissions Required)

Frequently asked questions

What is CVE-2026-13812?: CVE-2026-13812 is a medium-severity vulnerability in Apple Iphone OS, classified under Improper Input Validation. CVSS score: 4.7/10. Published 2026-06-30.
How severe is CVE-2026-13812?: Medium severity. CVSS v3 base score is 4.7 out of 10.