CVE-2018-17964: Aryanic HighPortal 12.5 has XSS via an Add Tags action.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2018-17964 is a medium-severity flaw (CVSS 6.1) affecting highportal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Aryanic HighPortal 12.5 has XSS via an Add Tags action.

Why this priority

No elevated risk signals yet

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	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-10-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: aryanic

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

Am I affected?

Timeline

2018-10-17 14:29 UTCPublished CVE record published
2026-06-17 01:46 UTCUpdated Record last modified

aryanic highportal DOWNGRADE

Affected: 12.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 12.5 (Debian / Ubuntu)

apt-cache madison highportal sudo apt install highportal=<VERSION_BEFORE_12.5> sudo apt-mark hold highportal

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

dnf --showduplicates list highportal sudo dnf downgrade highportal-<VERSION_BEFORE_12.5> sudo dnf versionlock add highportal

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-2018-17964?

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

Is CVE-2018-17964 being exploited?

CVE-2018-17964 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-2018-17964 affect?

CVE-2018-17964 affects highportal. Severity is medium (CVSS 6.1). Aryanic HighPortal 12.5 has XSS via an Add Tags action.

How urgent is CVE-2018-17964?

Priority 37/100. No elevated risk signals yet.

References

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