CVE-2026-13863 — HIGH (7.8)

Q: How severe is CVE-2026-13863?

CVE-2026-13863 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-13863?

Check the references section above for vendor advisories and patch information. Affected products include: Google Chrome, Google Android.

Vulnerability Description

Insufficient validation of untrusted input in CustomTabs in Google Chrome on Android prior to 150.0.7871.47 allowed a local attacker to perform privilege escalation via a malicious file. (Chromium security severity: Medium)

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Google	Chrome	< 150.0.7871.47
Google	Android	-

Related Weaknesses (CWE)

CWE-20

References

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_Vendor AdvisoryRelease Notes
https://issues.chromium.org/issues/496012495Permissions Required

FAQ

What is CVE-2026-13863?

CVE-2026-13863 is a vulnerability with a CVSS score of 7.8 (HIGH). Insufficient validation of untrusted input in CustomTabs in Google Chrome on Android prior to 150.0.7871.47 allowed a local attacker to perform privilege escalation via a malicious file. (Chromium sec...

How severe is CVE-2026-13863?

CVE-2026-13863 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-13863?

Check the references section above for vendor advisories and patch information. Affected products include: Google Chrome, Google Android.