What is CVE-2026-79117?

CVE-2026-79117 is a medium-severity vulnerability in Google Chrome, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.3/10. Published 2026-08-25.

How severe is CVE-2026-79117?

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

Vulnerability in Google Chrome

CVE-2026-79117

Race condition in WebAppInstalls in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to bypass web origin policy via a co-installed app. (Chromium security severity: High)

Vulnerability class: Race Condition

Published 2026-08-25 · last modified 2026-08-28.

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

EPSS: 0.002 (8.2th percentile), scored 2026-10-10.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.2% 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

Google Chrome

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/523738212 (Permissions Required)

Frequently asked questions

What is CVE-2026-79117?: CVE-2026-79117 is a medium-severity vulnerability in Google Chrome, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.3/10. Published 2026-08-25.
How severe is CVE-2026-79117?: Medium severity. CVSS v3 base score is 4.3 out of 10.