{"id":"CVE-2026-70159","title":"Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.","summary":"Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"Microsoft","product":"Microsoft.AspNetCore.SignalR.Common","affected":["Microsoft.AspNetCore.SignalR.Common >= 10.0.0, <= 10.0.12","Microsoft.AspNetCore.SignalR.Core >= 1.0.0, <= 1.2.13","Microsoft.AspNetCore.SignalR.Common >= 11.0.0-preview.5, <= 11.0.0-rc.1","Microsoft.AspNetCore.SignalR.Common >= 8.0.0, <= 8.0.31","Microsoft.AspNetCore.SignalR.Common >= 9.0.0, <= 9.0.20"],"patched":["Microsoft.AspNetCore.SignalR.Common 10.0.13","Microsoft.AspNetCore.SignalR.Core 1.2.14","Microsoft.AspNetCore.SignalR.Common 11.0.0-rc.2","Microsoft.AspNetCore.SignalR.Common 8.0.32","Microsoft.AspNetCore.SignalR.Common 9.0.21"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T23:17:57.133","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70159","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70159","label":"secure@microsoft.com"},{"url":"https://github.com/dotnet/aspnetcore/security/advisories/GHSA-334f-vvp4-7g6p"},{"url":"https://github.com/dotnet/announcements/issues/452"},{"url":"https://github.com/dotnet/aspnetcore/discussions/69792"},{"url":"https://github.com/advisories/GHSA-334f-vvp4-7g6p"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-70159.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-70159"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-70159"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70159"},{"url":"https://access.redhat.com/errata/RHSA-2026:84693"},{"url":"https://access.redhat.com/errata/RHSA-2026:84424"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548786"},{"url":"https://access.redhat.com/errata/RHSA-2026:86195"},{"url":"https://access.redhat.com/errata/RHSA-2026:86168"},{"url":"https://access.redhat.com/errata/RHSA-2026:86172"},{"url":"https://access.redhat.com/errata/RHSA-2026:86192"},{"url":"https://access.redhat.com/errata/RHSA-2026:86594"},{"url":"https://access.redhat.com/errata/RHSA-2026:86170"},{"url":"https://access.redhat.com/errata/RHSA-2026:86193"},{"url":"https://access.redhat.com/errata/RHSA-2026:86169"},{"url":"https://access.redhat.com/errata/RHSA-2026:86171"},{"url":"https://access.redhat.com/errata/RHSA-2026:84491"},{"url":"https://access.redhat.com/errata/RHSA-2026:88474"},{"url":"https://access.redhat.com/errata/RHSA-2026:88424"},{"url":"https://access.redhat.com/errata/RHSA-2026:88425"},{"url":"https://access.redhat.com/errata/RHSA-2026:88422"}],"tags":["nvd","ghsa","nuget","cve.org","csaf","vex","red-hat"],"aliases":["GHSA-334f-vvp4-7g6p"],"ecosystem":"nuget","ingestedAt":"2026-10-13T19:43:29.015Z","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-13T22:07:33.035384Z"},"epss":0.0123,"epssPercentile":0.68767,"slug":"CVE-2026-70159","body":"## Overview\n\nAllocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-70159)\n\nAffected packages:\n\n- `Microsoft.AspNetCore.SignalR.Common >= 10.0.0, <= 10.0.12`\n- `Microsoft.AspNetCore.SignalR.Core >= 1.0.0, <= 1.2.13`\n- `Microsoft.AspNetCore.SignalR.Common >= 11.0.0-preview.5, <= 11.0.0-rc.1`\n- `Microsoft.AspNetCore.SignalR.Common >= 8.0.0, <= 8.0.31`\n- `Microsoft.AspNetCore.SignalR.Common >= 9.0.0, <= 9.0.20`\n\nPatched in:\n\n- `Microsoft.AspNetCore.SignalR.Common 10.0.13`\n- `Microsoft.AspNetCore.SignalR.Core 1.2.14`\n- `Microsoft.AspNetCore.SignalR.Common 11.0.0-rc.2`\n- `Microsoft.AspNetCore.SignalR.Common 8.0.32`\n- `Microsoft.AspNetCore.SignalR.Common 9.0.21`\n\nSource: https://github.com/advisories/GHSA-334f-vvp4-7g6p\n\n## Vendor advisories\n\n- **RHSA-2026:84693** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84693)\n- **RHSA-2026:84424** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:84424)\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Hardened Images · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-70159.json)\n- **RHSA-2026:86195** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86195)\n- **RHSA-2026:86168** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86168)\n- **RHSA-2026:86172** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86172)\n- **RHSA-2026:86192** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86192)\n- **RHSA-2026:86594** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:86594)\n- **RHSA-2026:86170** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86170)\n- **RHSA-2026:86193** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86193)\n- **RHSA-2026:86169** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86169)\n- **RHSA-2026:86171** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86171)\n- **RHSA-2026:88474** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88474)\n- **RHSA-2026:88424** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88424)\n- **RHSA-2026:88425** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88425)\n- **RHSA-2026:88422** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat CodeReady Linux Builder EUS (v.9.6) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88422)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}