CVE-2026-70159
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Windows Affected 1 release
| Version | Package | Status | Fixed in |
|---|---|---|---|
| — | — | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| NuGet | Microsoft.AspNetCore.SignalR.Common | >= 9.0.0, <= 9.0.20 | 9.0.21 |
| NuGet | Microsoft.AspNetCore.SignalR.Common | >= 8.0.0, <= 8.0.31 | 8.0.32 |
| NuGet | Microsoft.AspNetCore.SignalR.Common | >= 11.0.0-preview.5, <= 11.0.0-rc.1 | 11.0.0-rc.2 |
| NuGet | Microsoft.AspNetCore.SignalR.Core | >= 1.0.0, <= 1.2.13 | 1.2.14 |
| NuGet | Microsoft.AspNetCore.SignalR.Common | >= 10.0.0, <= 10.0.12 | 10.0.13 |
| NuGet | Microsoft.AspNetCore.SignalR.Common | >=10.0.0,<10.0.13 | 10.0.13 |
| NuGet | Microsoft.AspNetCore.SignalR.Core | >=1.0.0,<1.2.14 | 1.2.14 |
| NuGet | Microsoft.AspNetCore.SignalR.Common | >=11.0.0-preview.5,<11.0.0-rc.2 | 11.0.0-rc.2 |
| NuGet | Microsoft.AspNetCore.SignalR.Common | >=8.0.0,<8.0.32 | 8.0.32 |
| NuGet | Microsoft.AspNetCore.SignalR.Common | >=9.0.0,<9.0.21 | 9.0.21 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70159
- https://github.com/dotnet/aspnetcore/security/advisories/GHSA-334f-vvp4-7g6p
- https://github.com/dotnet/announcements/issues/452
- https://github.com/dotnet/aspnetcore/discussions/69792
- https://github.com/advisories/GHSA-334f-vvp4-7g6p
- https://github.com/dotnet/aspnetcore
CWEs
CWE-770
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.