CVE-2026-109476

MEDIUM

Published Nov 10, 2026 Modified Nov 10, 2026 CWE-116

Description

Improper encoding or escaping of output in ASP.NET Core allows an unauthorized attacker to disclose information over a network.

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CVSS v3.1 Score

6.1

MEDIUM

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

EPSS — Exploit Prediction

0.0064

Probability of exploitation

0.51%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-116 CWE-116

References

Other References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109476

Frequently Asked Questions

What is CVE-2026-109476? +

Improper encoding or escaping of output in ASP.NET Core allows an unauthorized attacker to disclose information over a network. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2026-109476? +

CVE-2026-109476 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0064, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-109476? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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