CVE-2026-28280: osctrl is an osquery management solution

Q: How do I fix CVE-2026-28280?

osctrl: upgrade to 0.5.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-28280 being exploited?

CVE-2026-28280 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-2026-28280 affect?

CVE-2026-28280 affects osctrl. Severity is medium (CVSS 6.1). osctrl is an osquery management solution. Prior to version 0.5.0, a stored cross-site scripting (XSS) vulnerability exists in the `osctrl-admin` on-demand query list. A user with query-level permissions can inject arbitrary JavaScript via t

Q: How urgent is CVE-2026-28280?

Priority 26/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2026-28280 is a medium-severity flaw (CVSS 6.1) affecting osctrl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

osctrl is an osquery management solution. Prior to version 0.5.0, a stored cross-site scripting (XSS) vulnerability exists in the `osctrl-admin` on-demand query list. A user with query-level permissions can inject arbitrary JavaScript via the query parameter when running an on-demand query. The payload is stored and executes in the browser of any user (including administrators) who visits the query list page. This can be chained with CSRF token e

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: jmpsec

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

Am I affected?

Timeline

2026-02-26 23:16 UTCPublished CVE record published
2026-06-17 10:28 UTCUpdated Record last modified

jmpsec osctrl UPGRADE

Affected: < 0.5.0

Fixed in: 0.5.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy osctrl || rpm -q osctrl || osctrl --version

2. UPGRADE to 0.5.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade osctrl

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade osctrl

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-2026-28280?

osctrl: upgrade to 0.5.0. Exact commands for each OS are on this page.

Is CVE-2026-28280 being exploited?

CVE-2026-28280 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-2026-28280 affect?

CVE-2026-28280 affects osctrl. Severity is medium (CVSS 6.1). osctrl is an osquery management solution. Prior to version 0.5.0, a stored cross-site scripting (XSS) vulnerability exists in the `osctrl-admin` on-demand query list. A user with query-level permissions can inject arbitrary JavaScript via t

How urgent is CVE-2026-28280?

Priority 26/100. No elevated risk signals yet.

Related CVEs

CVE-2026-28279 HIGH 7.3 UPGRADE osctrl is an osquery management solution

References

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