CVE-2018-11501: PHP Scripts Mall Website Seller Script 2.0.3 has CSRF via user_submit.php?upd=2, with resultant XSS.

This month

HIGH 8.8DOWNGRADE

CVE-2018-11501 is a high-severity flaw (CVSS 8.8) affecting website seller script. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP Scripts Mall Website Seller Script 2.0.3 has CSRF via user_submit.php?upd=2, with resultant XSS.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79, CWE-352
Published	2018-05-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: website seller script project

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

Am I affected?

Timeline

2018-05-26 21:29 UTCPublished CVE record published
2026-06-17 01:36 UTCUpdated Record last modified

website seller script project website seller script DOWNGRADE

Affected: 2.0.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.3

1. Check installed version

apt-cache policy website-seller-script || rpm -q website-seller-script || website-seller-script --version

2. No fixed release: DOWNGRADE to a release before 2.0.3 (Debian / Ubuntu)

apt-cache madison website-seller-script sudo apt install website-seller-script=<VERSION_BEFORE_2.0.3> sudo apt-mark hold website-seller-script

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

dnf --showduplicates list website-seller-script sudo dnf downgrade website-seller-script-<VERSION_BEFORE_2.0.3> sudo dnf versionlock add website-seller-script

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-2018-11501?

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

Is CVE-2018-11501 being exploited?

CVE-2018-11501 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-2018-11501 affect?

CVE-2018-11501 affects website seller script. Severity is high (CVSS 8.8). PHP Scripts Mall Website Seller Script 2.0.3 has CSRF via user_submit.php?upd=2, with resultant XSS.

How urgent is CVE-2018-11501?

Priority 48/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-6879 HIGH 8.8 DOWNGRADE PHP Scripts Mall Website Seller Script 2.0.3 uses the client side to enforce validation of an e-mail address,
CVE-2018-6870 MEDIUM 6.1 DOWNGRADE Reflected XSS exists in PHP Scripts Mall Website Seller Script 2.0.3 via the Listings Search feature.
CVE-2018-20631 MEDIUM 5.3 DOWNGRADE PHP Scripts Mall Website Seller Script 2.0.5 allows full Path Disclosure via a request for an arbitrary image
CVE-2018-20530 MEDIUM 5.4 DOWNGRADE PHP Scripts Mall Website Seller Script 2.0.5 has XSS via a Profile field such as Company Address, a related is
CVE-2018-16456 MEDIUM 6.1 DOWNGRADE PHP Scripts Mall Website Seller Script 2.0.5 has XSS via a keyword

References

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