CVE-2026-28298: SolarWinds Observability Self-Hosted was found to be affected by a stored cross-site scripting vulnerability,

Q: How do I fix CVE-2026-28298?

observability self-hosted: upgrade to 2026.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-28298 being exploited?

CVE-2026-28298 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-28298 affect?

CVE-2026-28298 affects observability self-hosted. Severity is medium (CVSS 5.9). 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.

Q: How urgent is CVE-2026-28298?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 5.9UPGRADE

CVE-2026-28298 is a medium-severity flaw (CVSS 5.9) affecting observability self-hosted. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): SolarWinds · Vendor: solarwinds

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 15:16 UTCPublished CVE record published
2026-06-17 10:28 UTCUpdated Record last modified

solarwinds observability self-hosted UPGRADE

Affected: < 2026.1.1

Fixed in: 2026.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy observability-self-hosted || rpm -q observability-self-hosted || observability-self-hosted --version

2. UPGRADE to 2026.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade observability-self-hosted

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade observability-self-hosted

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28298?

observability self-hosted: upgrade to 2026.1.1. Exact commands for each OS are on this page.

Is CVE-2026-28298 being exploited?

CVE-2026-28298 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28298 affect?

CVE-2026-28298 affects observability self-hosted. Severity is medium (CVSS 5.9). 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.

How urgent is CVE-2026-28298?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2026-28297 MEDIUM 6.1 UPGRADE SolarWinds Observability Self-Hosted was found to be affected by a stored cross-site scripting vulnerability,

References

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