CVE-2018-20645: PHP Scripts Mall Basic B2B Script 2.0.9 has HTML injection via the First Name or Last Name field.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2018-20645 is a medium-severity flaw (CVSS 5.4) affecting basic b2b script. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP Scripts Mall Basic B2B Script 2.0.9 has HTML injection via the First Name or Last Name field.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-03-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: basic b2b script 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 16:00 UTCPublished CVE record published
2026-06-17 01:53 UTCUpdated Record last modified

basic b2b script project basic b2b script DOWNGRADE

Affected: 2.0.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.9

1. Check installed version

apt-cache policy basic-b2b-script || rpm -q basic-b2b-script || basic-b2b-script --version

2. No fixed release: DOWNGRADE to a release before 2.0.9 (Debian / Ubuntu)

apt-cache madison basic-b2b-script sudo apt install basic-b2b-script=<VERSION_BEFORE_2.0.9> sudo apt-mark hold basic-b2b-script

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

dnf --showduplicates list basic-b2b-script sudo dnf downgrade basic-b2b-script-<VERSION_BEFORE_2.0.9> sudo dnf versionlock add basic-b2b-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-2018-20645?

basic b2b script: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-20645 being exploited?

CVE-2018-20645 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-2018-20645 affect?

CVE-2018-20645 affects basic b2b script. Severity is medium (CVSS 5.4). PHP Scripts Mall Basic B2B Script 2.0.9 has HTML injection via the First Name or Last Name field.

How urgent is CVE-2018-20645?

Priority 37/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-20646 MEDIUM 6.5 DOWNGRADE PHP Scripts Mall Basic B2B Script 2.0.9 has has directory traversal via a direct request for a listing of an i
CVE-2018-20644 HIGH 8.8 DOWNGRADE PHP Scripts Mall Basic B2B Script 2.0.9 has Cross-Site Request Forgery (CSRF) via the Edit profile feature.
CVE-2017-17600 CRITICAL 9.8 DOWNGRADE Basic B2B Script 2.0.8 has SQL Injection via the product_details.php id parameter.
CVE-2017-15985 CRITICAL 9.8 MITIGATE Basic B2B Script allows SQL Injection via the product_view1.php pid or id parameter.

References

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