CVE-2019-14804: studio/polyglot.php?page=etemplates in UNA 10.0.0-RC1 allows XSS via the System Name field under Emails during

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MEDIUM 4.8DOWNGRADE

CVE-2019-14804 is a medium-severity flaw (CVSS 4.8) affecting una. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

studio/polyglot.php?page=etemplates in UNA 10.0.0-RC1 allows XSS via the System Name field under Emails during template editing.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-08-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: una

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

Am I affected?

Timeline

2019-08-09 14:15 UTCPublished CVE record published
2026-06-17 02:19 UTCUpdated Record last modified

una una DOWNGRADE

Affected: 10.0.0 rc1

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 10.0.0 (Debian / Ubuntu)

apt-cache madison una sudo apt install una=<VERSION_BEFORE_10.0.0> sudo apt-mark hold una

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

dnf --showduplicates list una sudo dnf downgrade una-<VERSION_BEFORE_10.0.0> sudo dnf versionlock add una

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: UNA 10.0.0 RC1 - 'polyglot.php' Persistent Cross-Site Scripting

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-2019-14804?

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

Is CVE-2019-14804 being exploited?

CVE-2019-14804 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-2019-14804 affect?

CVE-2019-14804 affects una. Severity is medium (CVSS 4.8). studio/polyglot.php?page=etemplates in UNA 10.0.0-RC1 allows XSS via the System Name field under Emails during template editing.

How urgent is CVE-2019-14804?

Priority 43/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2019-14805 MEDIUM 4.8 DOWNGRADE studio/builder_menu.php?page=sets in UNA 10.0.0-RC1 allows XSS via the System Name field under Sets during set

References

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