CVE-2026-17739 — MEDIUM (4.2)

Q: How severe is CVE-2026-17739?

CVE-2026-17739 has been rated MEDIUM with a CVSS base score of 4.2/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-17739?

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

Vulnerability Description

Insufficient policy enforcement in Extensions in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension. (Chromium security severity: Medium)

CVSS Score

4.2

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Google	Chrome	< 151.0.7922.72

Related Weaknesses (CWE)

CWE-79

References

https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_Release NotesVendor Advisory
https://issues.chromium.org/issues/498353463Permissions Required

FAQ

What is CVE-2026-17739?

CVE-2026-17739 is a vulnerability with a CVSS score of 4.2 (MEDIUM). Insufficient policy enforcement in Extensions in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXS...

How severe is CVE-2026-17739?

CVE-2026-17739 has been rated MEDIUM with a CVSS base score of 4.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-17739?

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