CVE-2026-45591
CVE-2026-45591 · ASP.NET Core Denial of Service Vulnerability
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.
CVSS 7.5 · High · EPSS 2.5% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
.net 10.0
- Versions
- ≥ 10.0.0, < 10.0.9: Affected (custom)
Update to 10.0.9
.net 8.0
- Versions
- ≥ 8.0.0, < 8.0.28: Affected (custom)
Update to 8.0.28
.net 9.0
- Versions
- ≥ 9.0.0, < 9.0.17: Affected (custom)
Update to 9.0.17
asp.net core 10.0
- Versions
- ≥ 10.0, < 10.0.9: Affected (custom)
Update to 10.0.9
asp.net core 8.0
- Versions
- ≥ 8.0, < 8.0.28: Affected (custom)
Update to 8.0.28
asp.net core 9.0
- Versions
- ≥ 9.0, < 9.0.17: Affected (custom)
Update to 9.0.17
microsoft visual studio 2026 version 18.6
- Versions
- ≥ 18.6.0, < 18.6.3: Affected (custom)
Update to 18.6.3
dotnet6 Ubuntu:22.04:LTS
- Versions
- 6.0.108-0ubuntu1~22.04.1
- 6.0.109-0ubuntu1~22.04.1
- 6.0.110-0ubuntu1~22.04.1
- 6.0.111-0ubuntu1~22.04.1
- 6.0.113-0ubuntu1~22.04.1
- 6.0.116-0ubuntu1~22.04.1
- 6.0.118-0ubuntu1~22.04.1
- 6.0.119-0ubuntu1~22.04.1
- 6.0.120-0ubuntu1~22.04.1
- 6.0.121-0ubuntu1~22.04.1
- 6.0.122-0ubuntu1~22.04.1
- 6.0.123-0ubuntu1~22.04.1
- 6.0.124-0ubuntu1~22.04.1
- 6.0.125-0ubuntu1~22.04.1
- 6.0.126-0ubuntu1~22.04.1
- 6.0.127-0ubuntu1~22.04.1
- 6.0.128-0ubuntu1~22.04.2
- 6.0.132-0ubuntu1~22.04.1
- 6.0.133-0ubuntu1~22.04.1
- 6.0.135-0ubuntu1~22.04.1
- 6.0.136-0ubuntu1~22.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
dotnet7 Ubuntu:22.04:LTS
- Versions
- 7.0.105-0ubuntu1~22.04.1
- 7.0.107-0ubuntu1~22.04.1
- 7.0.108-0ubuntu1~22.04.1
- 7.0.109-0ubuntu1~22.04.1
- 7.0.110-0ubuntu1~22.04.1
- 7.0.111-0ubuntu1~22.04.1
- 7.0.112-0ubuntu1~22.04.1
- 7.0.113-0ubuntu1~22.04.1
- 7.0.114-0ubuntu1~22.04.1
- 7.0.115-0ubuntu1~22.04.1
- 7.0.116-0ubuntu1~22.04.1
- 7.0.117-0ubuntu1~22.04.1
- 7.0.117-0ubuntu1~22.04.2
- 7.0.119-0ubuntu1~22.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
dotnet8 Ubuntu:22.04:LTS
- Versions
- 8.0.102-8.0.2-0ubuntu1~22.04.1
- 8.0.103-8.0.3-0ubuntu1~22.04.1
- 8.0.103-8.0.3-0ubuntu1~22.04.2
- 8.0.105-8.0.5-0ubuntu1~22.04.1
- 8.0.107-8.0.7-0ubuntu1~22.04.1
- 8.0.108-8.0.8-0ubuntu1~22.04.1
- 8.0.110-8.0.10-0ubuntu1~22.04.1
- 8.0.111-8.0.11-0ubuntu1~22.04.1
- 8.0.112-8.0.12-0ubuntu1~22.04.1
- 8.0.114-8.0.14-0ubuntu1~22.04.1
- 8.0.115-8.0.15-0ubuntu1~22.04.1
- 8.0.116-8.0.16-0ubuntu1~22.04.1
- 8.0.117-8.0.17-0ubuntu1~22.04.1
- 8.0.118-8.0.18-0ubuntu1~22.04.1
- 8.0.119-8.0.19-0ubuntu1~22.04.1
- 8.0.120-8.0.20-0ubuntu1~22.04.1
- 8.0.121-8.0.21-0ubuntu1~22.04.1
- 8.0.122-8.0.22-0ubuntu1~22.04.1
- 8.0.123-8.0.23-0ubuntu1~22.04.1
- 8.0.124-8.0.24-0ubuntu1~22.04.1
- 8.0.125-8.0.25-0ubuntu1~22.04.1
- 8.0.126-8.0.26-0ubuntu1~22.04.1
- 8.0.127-8.0.27-0ubuntu1~22.04.1
- Affected ranges
- ECOSYSTEM: < 8.0.128-8.0.28-0ubuntu1~22.04.1
Update to 8.0.128-8.0.28-0ubuntu1~22.04.1
dotnet10 Ubuntu:24.04:LTS
- Versions
- 10.0.100-10.0.0-0ubuntu1~24.04.1
- 10.0.101-10.0.1-0ubuntu1~24.04.2
- 10.0.103-10.0.3-0ubuntu1~24.04.1
- 10.0.104-10.0.4-0ubuntu1~24.04.1
- 10.0.105-10.0.5-0ubuntu1~24.04.1
- 10.0.106-10.0.6-0ubuntu1~24.04.1
- 10.0.107-10.0.7-0ubuntu1~24.04.1
- 10.0.108-10.0.8-0ubuntu1~24.04.1
- Affected ranges
- ECOSYSTEM: < 10.0.109-10.0.9-0ubuntu1~24.04.1
Update to 10.0.109-10.0.9-0ubuntu1~24.04.1
dotnet8 Ubuntu:24.04:LTS
- Versions
- 8.0.100-8.0.0~rc1-0ubuntu1
- 8.0.100-8.0.0~rc2-0ubuntu1
- 8.0.100-8.0.0~rc2-0ubuntu2
- 8.0.100-8.0.0-0ubuntu1
- 8.0.100-8.0.0-0ubuntu2
- 8.0.101-8.0.1-0ubuntu1
- 8.0.101-8.0.1-0ubuntu2
- 8.0.102-8.0.2-0ubuntu1
- 8.0.103-8.0.3-0ubuntu2
- 8.0.103-8.0.3-0ubuntu3
- 8.0.104-8.0.4-0ubuntu1
- 8.0.105-8.0.5-0ubuntu1~24.04.1
- 8.0.107-8.0.7-0ubuntu1~24.04.1
- 8.0.108-8.0.8-0ubuntu1~24.04.1
- 8.0.108-8.0.8-0ubuntu1~24.04.2
- 8.0.110-8.0.10-0ubuntu1~24.04.1
- 8.0.111-8.0.11-0ubuntu1~24.04.1
- 8.0.112-8.0.12-0ubuntu1~24.04.1
- 8.0.114-8.0.14-0ubuntu1~24.04.1
- 8.0.115-8.0.15-0ubuntu1~24.04.1
- 8.0.116-8.0.16-0ubuntu1~24.04.1
- 8.0.117-8.0.17-0ubuntu1~24.04.1
- 8.0.118-8.0.18-0ubuntu1~24.04.1
- 8.0.119-8.0.19-0ubuntu1~24.04.1
- 8.0.120-8.0.20-0ubuntu1~24.04.1
- 8.0.121-8.0.21-0ubuntu1~24.04.1
- 8.0.122-8.0.22-0ubuntu1~24.04.1
- 8.0.123-8.0.23-0ubuntu1~24.04.1
- 8.0.124-8.0.24-0ubuntu1~24.04.1
- 8.0.125-8.0.25-0ubuntu1~24.04.1
- 8.0.126-8.0.26-0ubuntu1~24.04.1
- 8.0.127-8.0.27-0ubuntu1~24.04.1
- Affected ranges
- ECOSYSTEM: < 8.0.128-8.0.28-0ubuntu1~24.04.1
Update to 8.0.128-8.0.28-0ubuntu1~24.04.1
dotnet10 Ubuntu:25.10
- Versions
- 10.0.100-10.0.0~rc1-0ubuntu1
- 10.0.100-10.0.0~rc2-0ubuntu1~25.10.2
- 10.0.100-10.0.0-0ubuntu1~25.10.1
- 10.0.101-10.0.1-0ubuntu1~25.10.2
- 10.0.103-10.0.3-0ubuntu1~25.10.1
- 10.0.104-10.0.4-0ubuntu1~25.10.1
- 10.0.105-10.0.5-0ubuntu1~25.10.1
- 10.0.106-10.0.6-0ubuntu1~25.10.1
- 10.0.107-10.0.7-0ubuntu1~25.10.1
- 10.0.108-10.0.8-0ubuntu1~25.10.1
- Affected ranges
- ECOSYSTEM: < 10.0.109-10.0.9-0ubuntu1~25.10.1
Update to 10.0.109-10.0.9-0ubuntu1~25.10.1
dotnet8 Ubuntu:25.10
- Versions
- 8.0.115-8.0.15-0ubuntu1
- 8.0.116-8.0.16-0ubuntu1
- 8.0.117-8.0.17-0ubuntu1
- 8.0.118-8.0.18-0ubuntu1
- 8.0.119-8.0.19-0ubuntu1
- 8.0.120-8.0.20-0ubuntu1
- 8.0.121-8.0.21-0ubuntu1~25.10.1
- 8.0.122-8.0.22-0ubuntu1~25.10.1
- 8.0.123-8.0.23-0ubuntu1~25.10.1
- 8.0.124-8.0.24-0ubuntu1~25.10.1
- 8.0.125-8.0.25-0ubuntu1~25.10.1
- 8.0.126-8.0.26-0ubuntu1~25.10.1
- 8.0.127-8.0.27-0ubuntu1~25.10.1
- Affected ranges
- ECOSYSTEM: < 8.0.128-8.0.28-0ubuntu1~25.10.1
Update to 8.0.128-8.0.28-0ubuntu1~25.10.1
dotnet9 Ubuntu:25.10
- Versions
- 9.0.105-9.0.4-0ubuntu1
- 9.0.106-9.0.5-0ubuntu1
- 9.0.107-9.0.6-0ubuntu1
- 9.0.108-9.0.7-0ubuntu1
- 9.0.109-9.0.8-0ubuntu1
- 9.0.110-9.0.9-0ubuntu1
- 9.0.111-9.0.10-0ubuntu1~25.10.1
- 9.0.112-9.0.11-0ubuntu1~25.10.1
- 9.0.113-9.0.12-0ubuntu1~25.10.1
- 9.0.114-9.0.13-0ubuntu1~25.10.1
- 9.0.115-9.0.14-0ubuntu1~25.10.1
- 9.0.116-9.0.15-0ubuntu1~25.10.1
- 9.0.117-9.0.16-0ubuntu1~25.10.1
- Affected ranges
- ECOSYSTEM: < 9.0.118-9.0.17-0ubuntu1~25.10.1
Update to 9.0.118-9.0.17-0ubuntu1~25.10.1
dotnet10 Ubuntu:26.10
- Versions
- 10.0.105-10.0.5-0ubuntu1
- 10.0.107-10.0.7-0ubuntu1~26.04.1
- 10.0.108-10.0.8-0ubuntu1
- Affected ranges
- ECOSYSTEM: < 10.0.109-10.0.9-0ubuntu1
Update to 10.0.109-10.0.9-0ubuntu1
dotnet10 Ubuntu:26.04:LTS
- Versions
- 10.0.100-10.0.0~rc1-0ubuntu1
- 10.0.100-10.0.0~rc2-0ubuntu1
- 10.0.100-10.0.0-0ubuntu1
- 10.0.100-10.0.0-0ubuntu2
- 10.0.101-10.0.1-0ubuntu1
- 10.0.101-10.0.1-0ubuntu2
- 10.0.101-10.0.1-0ubuntu3
- 10.0.102-10.0.2-0ubuntu1
- 10.0.103-10.0.3-0ubuntu1
- 10.0.104-10.0.4-0ubuntu1
- 10.0.105-10.0.5-0ubuntu1
- 10.0.107-10.0.7-0ubuntu1~26.04.1
- 10.0.108-10.0.8-0ubuntu1~26.04.1
- Affected ranges
- ECOSYSTEM: < 10.0.109-10.0.9-0ubuntu1~26.04.1
Update to 10.0.109-10.0.9-0ubuntu1~26.04.1
Original sources
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591
- https://access.redhat.com/security/cve/CVE-2026-45591
- https://bugzilla.redhat.com/show_bug.cgi?id=2487224
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45591.json
- https://access.redhat.com/errata/RHSA-2026:28007
- https://access.redhat.com/errata/RHSA-2026:28009
- https://access.redhat.com/errata/RHSA-2026:25115
- https://access.redhat.com/errata/RHSA-2026:25111
- https://access.redhat.com/errata/RHSA-2026:25112
- https://access.redhat.com/errata/RHSA-2026:25114
- https://access.redhat.com/errata/RHSA-2026:25110
- https://access.redhat.com/errata/RHSA-2026:25113
- https://access.redhat.com/errata/RHSA-2026:28227
- https://access.redhat.com/errata/RHSA-2026:28011
- https://access.redhat.com/errata/RHSA-2026:28051
- https://access.redhat.com/errata/RHSA-2026:25222
- https://access.redhat.com/errata/RHSA-2026:25220
- https://access.redhat.com/errata/RHSA-2026:25221
- https://access.redhat.com/errata/RHSA-2026:26638
- https://access.redhat.com/errata/RHSA-2026:26994
- https://access.redhat.com/errata/RHSA-2026:17527
- https://nvd.nist.gov/vuln/detail/CVE-2026-45591