CVE-2018-15528: Reflected Cross-Site Scripting exists in the Java System Solutions SSO plugin 4.0.13.1 for BMC MyIT

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MEDIUM 6.1DOWNGRADE

CVE-2018-15528 is a medium-severity flaw (CVSS 6.1) affecting sso plugin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reflected Cross-Site Scripting exists in the Java System Solutions SSO plugin 4.0.13.1 for BMC MyIT. A remote attacker can abuse this issue to inject client-side scripts into the "select_sso()" function. The payload is triggered when the victim opens a prepared /ux/jss-sso/arslogin?[XSS] link and then clicks the "Login" button.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-08-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: javasystemsolutions

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

Am I affected?

Timeline

2018-08-21 16:29 UTCPublished CVE record published
2026-06-17 01:42 UTCUpdated Record last modified

javasystemsolutions sso plugin DOWNGRADE

Affected: 4.0.13.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.13.1

1. Check installed version

apt-cache policy sso-plugin || rpm -q sso-plugin || sso-plugin --version

2. No fixed release: DOWNGRADE to a release before 4.0.13.1 (Debian / Ubuntu)

apt-cache madison sso-plugin sudo apt install sso-plugin=<VERSION_BEFORE_4.0.13.1> sudo apt-mark hold sso-plugin

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sso-plugin sudo dnf downgrade sso-plugin-<VERSION_BEFORE_4.0.13.1> sudo dnf versionlock add sso-plugin

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2018-15528?

sso plugin: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-15528 being exploited?

CVE-2018-15528 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-2018-15528 affect?

CVE-2018-15528 affects sso plugin. Severity is medium (CVSS 6.1). Reflected Cross-Site Scripting exists in the Java System Solutions SSO plugin 4.0.13.1 for BMC MyIT. A remote attacker can abuse this issue to inject client-side scripts into the "select_sso()" function. The payload is triggered when the vi

How urgent is CVE-2018-15528?

Priority 44/100. Public exploit reference

Software pages

Java vulnerabilities

References

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