CVE-2019-8938: VertrigoServ 2.17 allows XSS via the /inc/extensions.php ext parameter.

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MEDIUM 6.1DOWNGRADE

CVE-2019-8938 is a medium-severity flaw (CVSS 6.1) affecting vertrigoserv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

VertrigoServ 2.17 allows XSS via the /inc/extensions.php ext parameter.

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	1.5% (top 25%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-03-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: vertrigoserv project

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

Am I affected?

Timeline

2019-03-21 16:01 UTCPublished CVE record published
2026-06-17 02:42 UTCUpdated Record last modified

vertrigoserv project vertrigoserv DOWNGRADE

Affected: 2.17

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.17

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.17 (Debian / Ubuntu)

apt-cache madison vertrigoserv sudo apt install vertrigoserv=<VERSION_BEFORE_2.17> sudo apt-mark hold vertrigoserv

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

dnf --showduplicates list vertrigoserv sudo dnf downgrade vertrigoserv-<VERSION_BEFORE_2.17> sudo dnf versionlock add vertrigoserv

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-2019-8938?

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

Is CVE-2019-8938 being exploited?

CVE-2019-8938 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-2019-8938 affect?

CVE-2019-8938 affects vertrigoserv. Severity is medium (CVSS 6.1). VertrigoServ 2.17 allows XSS via the /inc/extensions.php ext parameter.

How urgent is CVE-2019-8938?

Priority 45/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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