CVE-2026-96230 ASP.NET Core - Stored XSS

ASP.NET Core contains a stored XSS caused by improper neutralization of input during web page generation, letting unauthorized attackers execute code over a network, exploit requires no special privileges.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.78% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Client Script Exec
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to the latest version of ASP.NET Core.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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