CVE-2018-19340: Guriddo Form PHP 5.3 has XSS via the demos/jqform/defaultnodb/default.php OrderID, ShipName, ShipAddress, Ship

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MEDIUM 6.1DOWNGRADE

CVE-2018-19340 is a medium-severity flaw (CVSS 6.1) affecting form php. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Guriddo Form PHP 5.3 has XSS via the demos/jqform/defaultnodb/default.php OrderID, ShipName, ShipAddress, ShipCity, ShipPostalCode, ShipCountry, Freight, or details 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	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-11-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: guriddo

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

Am I affected?

Timeline

2018-11-17 17:29 UTCPublished CVE record published
2026-06-17 01:49 UTCUpdated Record last modified

guriddo form php DOWNGRADE

Affected: 5.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.3

1. Check installed version

apt-cache policy form-php || rpm -q form-php || form-php --version

2. No fixed release: DOWNGRADE to a release before 5.3 (Debian / Ubuntu)

apt-cache madison form-php sudo apt install form-php=<VERSION_BEFORE_5.3> sudo apt-mark hold form-php

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

dnf --showduplicates list form-php sudo dnf downgrade form-php-<VERSION_BEFORE_5.3> sudo dnf versionlock add form-php

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-2018-19340?

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

Is CVE-2018-19340 being exploited?

CVE-2018-19340 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-2018-19340 affect?

CVE-2018-19340 affects form php. Severity is medium (CVSS 6.1). Guriddo Form PHP 5.3 has XSS via the demos/jqform/defaultnodb/default.php OrderID, ShipName, ShipAddress, ShipCity, ShipPostalCode, ShipCountry, Freight, or details parameter.

How urgent is CVE-2018-19340?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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