SolarWinds Observability Self-Hosted Stored Cross-Site Scripting Vulnerability

published 2026-03-26 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-16185

cvss: 5.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

SolarWinds Observability Self-Hosted was found to be affected by a stored cross-site scripting vulnerability, which when exploited, can lead to unintended script execution.

Patch / fix

fixed in 1

solarwinds observability_self-hosted 2026.1.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 7 mo ago (2026-03-26)

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.9	CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
NVD	3.1	8.1	CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Affected products

SolarWinds SolarWinds Observability Self-Hosted

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

solarwinds.com /trust-center/security-advisories/CVE-2026-28298
vendor-advisory
documentation.solarwinds.com /en/success_center/orionplatform/content/release_notes/hco_2026-1-1_release_notes.htm
release-notes

Sources

CVE List CVE-2026-28298
NVD CVE-2026-28298

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary