High severity8.8NVD Advisory· Published Sep 3, 2025· Updated Jun 17, 2026

CVE-2025-9866

Description

Inappropriate implementation in Extensions in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Medium)

Affected products

Google/Chromellm-fuzzy2 versions
<140.0.7339.80+ 1 more
- (no CPE)range: <140.0.7339.80
- (no CPE)range: 140.0.7339.80
Chromium/Chromiumllm-fuzzy
Range: <140.0.7339.80
osv-coords3 versions
pkg:apk/chainguard/chromium pkg:apk/wolfi/chromium pkg:rpm/opensuse/chromium&distro=openSUSE%20Tumbleweed
< 140.0.7339.80-r0+ 2 more
- (no CPE)range: < 140.0.7339.80-r0
- (no CPE)range: < 140.0.7339.80-r0
- (no CPE)range: < 140.0.7339.80-1.1

Patches

Vulnerability mechanics

References

chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.htmlnvdRelease Notes
issues.chromium.org/issues/379337758nvdIssue TrackingPermissions Required

News mentions

No linked articles in our index yet.

cvss	0.572
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000