TI-2026-76951 Aliases CVE-2026-28328 GHSA-hqgx-66xg-f35h

Incorrect authorization in SolarWinds Observability Self-Hosted

MEDIUM 41CWE-863Published 2026-10-20 · Updated 2026-10-23

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

SolarWinds Observability Self-Hosted version 2026.2.3 and all previous versions are affected. The product uses a broken authorization scheme, which is an incorrect authorization flaw (CWE-863). A low-privileged user can access and modify information beyond their assigned permissions over the network.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

SolarWinds Observability Self-Hosted was found to be affected by a broken authorization schema that can allow low-privileged users to access and modify information beyond their assigned permissions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00496 42nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
SolarWinds	SolarWinds Observability Self-Hosted	2026.2.3 and all previous versions	—	No fix listed	CNA

SolarWinds Observability Self-Hosted VendorSolarWinds Affected 2026.2.3 and all previous versions Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:solarwinds:observability_self-hosted::::::::	—	—	SolarWinds

cpe:2.3:a:solarwinds:observability_self-hosted:*:*:*:*:*:*:*:* Versions — — ·SolarWinds

Remediation

The sources list no fixed version for SolarWinds Observability Self-Hosted.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-20 Threatist record created from CVE-2026-28328
2026-10-20 CISA SSVC decision points changed
2026-10-20 Priority changed: MEDIUM → LOW
2026-10-21 Alias added: GHSA-hqgx-66xg-f35h
2026-10-21 CISA SSVC decision points changed
2026-10-22 Priority changed: LOW → MEDIUM

References

Advisory 1

https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28328

Other 2

TI-2025-27044 SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2025-27034 SolarWinds Web Help Desk Security Control Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2025-19358 SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2024-19175 SolarWinds Web Help Desk Java Deserialization Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2021-14105 Serv-U Remote Memory Escape Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2020-08199 Authentication bypass in SolarWinds Orion Platform KEVCVSS 3.1CRITICAL 9.8

See all 349 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences