CVE-2026-78991 — MEDIUM (5.3)

Q: How severe is CVE-2026-78991?

CVE-2026-78991 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-78991?

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

Vulnerability Description

Race condition in WebProtect in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to obtain sensitive information via a crafted HTML page. (Chromium security severity: Medium)

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Google	Chrome	< 152.0.7977.65

Related Weaknesses (CWE)

CWE-367

References

https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_Release NotesVendor Advisory
https://issues.chromium.org/issues/502888857Permissions Required

FAQ

What is CVE-2026-78991?

CVE-2026-78991 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Race condition in WebProtect in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to obtain sensitive information via a crafted HTML page. (Chromi...

How severe is CVE-2026-78991?

CVE-2026-78991 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-78991?

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