CVE-2026-45591

HIGH
Published Jun 9, 2026 Modified Jun 9, 2026 CWE-400

Description

Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0243
Probability of exploitation
0.82%
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-400 Uncontrolled Resource Consumption

References

Frequently Asked Questions

What is CVE-2026-45591? +
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-45591? +
CVE-2026-45591 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0243, placing it in the 1th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-45591? +
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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