VulnerabilityAnalyzed

CVE-2026-9959

Race in WebRTC in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

LOW 3.1EPSS 0.14%

Does this matter?

Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.

Description

Race in WebRTC in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

CVSS 3.1: 3.1 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS: 0.14% probability · 3th percentile
CISA KEV: Not listed
Weakness: CWE-362
Affected: google/chrome
Source: chrome-cve-admin@google.com

References

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.htmlRelease Notes
https://issues.chromium.org/issues/504557432Permissions Required

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.