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Advisory severityHigh8.8Red Hat Linux

High [CVE-2026-47303] Privilege Elevation via Authentication Bypass

This high-severity Red Hat Linux advisory covers CVE-2026-47303 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-47303 Source published Source updated

VulniPulse record published Record updated

CVE-2026-47303
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

Summary

Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network. This can allow the attacker to elevate their privileges within the system.

Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-472.

Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Hardened Images.

Red Hat lists Red Hat OpenShift Dev Spaces as not affected.

Red Hat fixing advisory: RHSA-2026:41893, RHSA-2026:41895, RHSA-2026:41897, RHSA-2026:58566, RHSA-2026:58567, RHSA-2026:41899, RHSA-2026:41900, RHSA-2026:41901, RHSA-2026:41894, RHSA-2026:41896, RHSA-2026:41898, RHSA-2026:58568, RHSA-2026:58569, RHSA-2026:58570, RHSA-2026:26638, RHSA-2026:39952, RHSA-2026:42145.

Affected products named by the advisory: Red Hat package: dotnet8.0; Red Hat package: dotnet9.0; Red Hat package: dotnet10.0.

Is CVE-2026-47303 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-47303 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-47303?

Upgrade to a fixed release named by Red Hat:

  • dotnet8.0-0:8.0.129-1.el10_2
  • dotnet9.0-0:9.0.119-1.el10_2
  • dotnet10.0-0:10.0.110-1.el10_2
  • dotnet8.0-0:8.0.130-1.el10_0
  • dotnet9.0-0:9.0.120-1.el10_0
  • dotnet9.0-0:9.0.119-1.el8_10
  • dotnet10.0-0:10.0.110-1.el8_10
  • dotnet8.0-0:8.0.129-1.el8_10
  • dotnet8.0-0:8.0.129-1.el9_8
  • dotnet9.0-0:9.0.119-1.el9_8
  • dotnet10.0-0:10.0.110-1.el9_8
  • dotnet8.0-0:8.0.130-1.el9_4

22 more fixed releases are listed below.

Confirm against the vendor advisory before you patch.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Fixed versions
  • dotnet8.0-0:8.0.129-1.el10_2
  • dotnet9.0-0:9.0.119-1.el10_2
  • dotnet10.0-0:10.0.110-1.el10_2
  • dotnet8.0-0:8.0.130-1.el10_0
  • dotnet9.0-0:9.0.120-1.el10_0
  • dotnet9.0-0:9.0.119-1.el8_10
  • dotnet10.0-0:10.0.110-1.el8_10
  • dotnet8.0-0:8.0.129-1.el8_10
  • dotnet8.0-0:8.0.129-1.el9_8
  • dotnet9.0-0:9.0.119-1.el9_8
  • dotnet10.0-0:10.0.110-1.el9_8
  • dotnet8.0-0:8.0.130-1.el9_4
  • dotnet8.0-0:8.0.130-1.el9_6
  • dotnet9.0-0:9.0.120-1.el9_6
  • dotnet10-0-main-10.0.109-1.hum1
  • dotnet9-0-main-9.0.119-1.hum1
  • dotnet8-0-main-8.0.129-2.1.hum1
  • RHSA-2026:41893
  • RHSA-2026:41895
  • RHSA-2026:41897
  • RHSA-2026:58566
  • RHSA-2026:58567
  • RHSA-2026:41899
  • RHSA-2026:41900
  • RHSA-2026:41901
  • RHSA-2026:41894
  • RHSA-2026:41896
  • RHSA-2026:41898
  • RHSA-2026:58568
  • RHSA-2026:58569
  • RHSA-2026:58570
  • RHSA-2026:26638
  • RHSA-2026:39952
  • RHSA-2026:42145

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Mitigation

Upgrade to a fixed release: dotnet8.0-0:8.0.129-1.el10_2, dotnet9.0-0:9.0.119-1.el10_2, dotnet10.0-0:10.0.110-1.el10_2, dotnet8.0-0:8.0.130-1.el10_0, dotnet9.0-0:9.0.120-1.el10_0, dotnet9.0-0:9.0.119-1.el8_10. That is the remediation for this advisory.

The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

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