CVE-2026-87434
Low
No strong exploitation signal.
CVSS base
3.1
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS — probability of exploitation (30 days)
0.3%
19.3th percentile
CISA KEV
Not listed
Weakness / dates
CWE-862
Published 2026-09-09 · modified 2026-09-09
CVSS breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
| Attack Vector | N | Network |
| Attack Complexity | H | High |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | U | Unchanged |
| Confidentiality | L | Low |
| Integrity | N | None |
| Availability | N | None |
Timeline
- 2026-09-09 — Published (NVD)
- 2026-09-09 — Last modified (NVD)
Description
Missing authorization in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)