chromium-browser: chromium-browser: Insufficient policy enforcement in IFrame Sandbox
Published May 14, 2026
4.3
MEDIUMCVSS 3.1
EPSS 0.23%
Description
Insufficient policy enforcement in IFrame Sandbox in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)
Affected products
-
- Version 148.0.7778.168StatusaffectedConstraints<148.0.7778.168
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed May 15, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
May–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.23% (0.00234) | 12.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.18% (0.00182) | 7.92th | v5 (v2026.06.15) |
| May 15, 2026 | 0.02% (0.00016) | 3.60th | v4 (v2025.03.14) |
References (6)
- https://access.redhat.com/security/cve/CVE-2026-8563 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2477706 Issue Tracking
- https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html Vendor Advisory
- https://issues.chromium.org/issues/40061220 Permissions Required
- https://nvd.nist.gov/vuln/detail/CVE-2026-8563
- https://www.cve.org/CVERecord?id=CVE-2026-8563
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2026-8563 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2477706 | Issue Tracking | |
| https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html | Vendor Advisory | |
| https://issues.chromium.org/issues/40061220 | Permissions Required | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-8563 | ||
| https://www.cve.org/CVERecord?id=CVE-2026-8563 |
Change history (0)
No recorded changes yet.