CVE-2026-5891
Low
No strong exploitation signal.
CVSS base
4.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
EPSS — probability of exploitation (30 days)
0.2%
11.0th percentile
CISA KEV
Not listed
Weakness / dates
CWE-451
Published 2026-04-08 · modified 2026-07-24
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | L | Low |
Timeline
- 2026-04-08 — Published (NVD)
- 2026-07-24 — Last modified (NVD)
Description
Insufficient policy enforcement in browser UI in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)