# CVE-2026-28330: SolarWinds Observability Self-Hosted stored XSS vulnerability

Source: https://junglewise.ai/threats/cve-2026-28330-solarwinds-observability-self-hosted-was-found-to-be-affected-by  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-28330 · Severity: medium · CVSS 4.6 · Published 2026-10-20

SolarWinds Observability Self-Hosted is a monitoring platform that provides infrastructure and application visibility for IT teams. The product contains a stored cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious JavaScript, which executes when other authenticated users view affected pages. An attacker with valid credentials could steal session tokens, perform unauthorized actions, or access sensitive monitoring data.

Technologies: [SolarWinds Observability Self-Hosted](https://junglewise.ai/threats/technologies/observability-self-hosted). Vendors: [SolarWinds](https://junglewise.ai/threats/vendors/solarwinds).

## Quick answers

**Is CVE-2026-28330 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-28330 being exploited in the wild.

**How severe is CVE-2026-28330?** Medium severity, with a CVSS score of 4.6, published 20 October 2026.

**Which products and versions are affected?** SolarWinds Observability Self-Hosted.

**Is there a fix for CVE-2026-28330?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-28330 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-28330?** Check whether you run SolarWinds Observability Self-Hosted. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stored XSS vulnerability in SolarWinds Observability Self-Hosted allows authenticated attackers to inject malicious scripts into the application, which persist and execute in the browsers of other authenticated users who access the affected pages. The attack requires valid authentication credentials and affects the web application interface. Exploitation could lead to session hijacking, lateral movement, or unauthorized access to sensitive infrastructure monitoring information.

## Affected products

- SolarWinds Observability Self-Hosted

## Timeline

- 2026-10-20: disclosed

## References

- [https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm](https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm)
- [https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/hco_2026-4_release_notes.htm](https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/hco_2026-4_release_notes.htm)

## Related threats

- [SolarWinds Observability Self-Hosted SSRF in web application](https://junglewise.ai/threats/cve-2026-28329-solarwinds-observability-self-hosted-was-found-to-be-affected-by)
- [SolarWinds Observability Self-Hosted broken authorization in user access control](https://junglewise.ai/threats/cve-2026-28328-solarwinds-observability-self-hosted-was-found-to-be-affected-by)
- [SolarWinds Observability Self-Hosted unauthenticated remote code execution](https://junglewise.ai/threats/cve-2026-28325-solarwinds-observability-self-hosted-was-found-to-be-affected-by)
- [SolarWinds Observability Self-Hosted unauthenticated remote code execution](https://junglewise.ai/threats/cve-2026-28324-solarwinds-observability-self-hosted-was-found-to-be-affected-by)
- [SolarWinds Observability Self-Hosted open redirect](https://junglewise.ai/threats/cve-2026-28301-solarwinds-observability-self-hosted-open-redirect)