CVE-2026-13959

Same Origin Policy Bypass via Insufficient Validation in Blink

Published Jun 30, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Insufficient validation of untrusted input in Blink in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4672-1 chromium security update
Debian DSA Debian DSA DSA-6378-1 chromium security update
History
Type Values Removed Values Added
Title Same Origin Policy Bypass via Insufficient Validation in Blink
Type Values Removed Values Added
Title Same-Origin Policy Bypass via Blink Input Validation
Type Values Removed Values Added
Title Same-Origin Policy Bypass via Blink Input Validation
Type Values Removed Values Added
Title Same Origin Policy Bypass via Custom HTML in Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via Custom HTML in Chrome
Type Values Removed Values Added
Title Insufficient Validation in Blink Allows Same Origin Policy Bypass
Type Values Removed Values Added
Title Insufficient Validation in Blink Allows Same Origin Policy Bypass
Type Values Removed Values Added
Title Same‑Origin Policy Bypass via Insufficient Input Validation in Blink
Type Values Removed Values Added
Title Same‑Origin Policy Bypass via Insufficient Input Validation in Blink
Type Values Removed Values Added
Title Same Origin Policy Bypass via Blink Input Validation in Google Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via Blink Input Validation in Google Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via Blink Input Validation in Google Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via Blink Input Validation in Google Chrome
Type Values Removed Values Added
Title Insufficient Input Validation in Blink Allows Same Origin Policy Bypass in Google Chrome
Type Values Removed Values Added
Title Insufficient Input Validation in Blink Allows Same Origin Policy Bypass in Google Chrome
Type Values Removed Values Added
Title Blink Input Validation Allows Same-Origin Policy Bypass in Google Chrome
Type Values Removed Values Added
Title Blink Input Validation Allows Same-Origin Policy Bypass in Google Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via Insufficient Input Validation in Chrome Blink
Type Values Removed Values Added
Title Same Origin Policy Bypass via Insufficient Input Validation in Chrome Blink
Type Values Removed Values Added
Title Same‑Origin Policy Bypass in Google Chrome via Blink Input Validation Flaw
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Same‑Origin Policy Bypass in Google Chrome via Blink Input Validation Flaw
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Remote Same Origin Policy Bypass via Untrusted Input in Blink
Type Values Removed Values Added
Title Remote Same Origin Policy Bypass via Untrusted Input in Blink
Type Values Removed Values Added
Description Insufficient validation of untrusted input in Blink in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-20
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Jul 2, 2026, 2:17 PM
Reserved
Jun 29, 2026, 11:04 PM
Status
Analyzed
Published
Jun 30, 2026, 11:17 PM
Modified
Oct 25, 2026, 9:10 PM