high7.5
CVE-2026-26171
Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
Impact
Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.5 | 10.0.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | .Net | from 10.0.0 before 10.0.6 from 8.0.0 before 8.0.26 from 9.0.0 before 9.0.15 |
| Microsoft | Powershell | from 7.5 before 7.5.6 from 7.6 before 7.6.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26171
- https://access.redhat.com/errata/RHSA-2026:13280
- https://access.redhat.com/errata/RHSA-2026:13281
- https://access.redhat.com/errata/RHSA-2026:13282
- https://access.redhat.com/errata/RHSA-2026:13283
- https://access.redhat.com/errata/RHSA-2026:13693
- https://access.redhat.com/errata/RHSA-2026:8467
- https://access.redhat.com/errata/RHSA-2026:8468
- https://access.redhat.com/errata/RHSA-2026:8469
- https://access.redhat.com/errata/RHSA-2026:8470
- https://access.redhat.com/errata/RHSA-2026:8471
- https://access.redhat.com/errata/RHSA-2026:8472
- https://access.redhat.com/errata/RHSA-2026:8473
- https://access.redhat.com/errata/RHSA-2026:8474
- https://access.redhat.com/errata/RHSA-2026:8475
- https://access.redhat.com/errata/RHSA-2026:9077
- https://access.redhat.com/errata/RHSA-2026:9080
- https://access.redhat.com/errata/RHSA-2026:9205
- https://access.redhat.com/security/cve/CVE-2026-26171
- https://bugzilla.redhat.com/show_bug.cgi?id=2457739
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26171.json
- https://github.com/advisories/GHSA-w3x6-4m5h-cxqf
- https://github.com/dotnet/runtime/security/advisories/GHSA-w3x6-4m5h-cxqf
- https://nvd.nist.gov/vuln/detail/CVE-2026-26171
- https://github.com/dotnet/announcements/issues/389