CVE-2018-20635: PHP Scripts Mall Advance B2B Script 2.1.4 has directory traversal via a direct request for a listing of an ima

Routine

MEDIUM 4.3DOWNGRADE

CVE-2018-20635 is a medium-severity flaw (CVSS 4.3) affecting advance b2b script. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP Scripts Mall Advance B2B Script 2.1.4 has directory traversal via a direct request for a listing of an image directory such as an assets/ directory.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-22
Published	2019-03-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: advance 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

advance b2b script project advance b2b script DOWNGRADE

Affected: 2.1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.1.4 (Debian / Ubuntu)

apt-cache madison advance-b2b-script sudo apt install advance-b2b-script=<VERSION_BEFORE_2.1.4> sudo apt-mark hold advance-b2b-script

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

dnf --showduplicates list advance-b2b-script sudo dnf downgrade advance-b2b-script-<VERSION_BEFORE_2.1.4> sudo dnf versionlock add advance-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-2018-20635?

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

Is CVE-2018-20635 being exploited?

CVE-2018-20635 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-2018-20635 affect?

CVE-2018-20635 affects advance b2b script. Severity is medium (CVSS 4.3). PHP Scripts Mall Advance B2B Script 2.1.4 has directory traversal via a direct request for a listing of an image directory such as an assets/ directory.

How urgent is CVE-2018-20635?

Priority 38/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-20634 MEDIUM 6.5 DOWNGRADE PHP Scripts Mall Advance B2B Script 2.1.4 allows remote attackers to cause a denial of service (changed Page s
CVE-2018-20633 HIGH 8.8 DOWNGRADE PHP Scripts Mall Advance B2B Script 2.1.4 has Cross-Site Request Forgery (CSRF) via the Edit Profile feature.
CVE-2018-20632 MEDIUM 5.4 DOWNGRADE PHP Scripts Mall Advance B2B Script 2.1.4 has stored Cross-Site Scripting (XSS) via the FIRST NAME or LAST NAM
CVE-2017-17602 CRITICAL 9.8 DOWNGRADE Advance B2B Script 2.1.3 has SQL Injection via the tradeshow-list-detail.php show_id or view-product.php pid p

References

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