CVE-2020-8889: The ShipStation.com plugin 1.0 for CS-Cart allows remote attackers to obtain sensitive information (via action

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2020-8889 is a high-severity flaw (CVSS 7.5) affecting shipstation. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ShipStation.com plugin 1.0 for CS-Cart allows remote attackers to obtain sensitive information (via action=export) because a typo results in a successful comparison of a blank password and NULL.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Published	2023-03-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: shipstation

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

Am I affected?

Timeline

2023-03-28 21:15 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

shipstation shipstation DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison shipstation sudo apt install shipstation=<VERSION_BEFORE_1.0> sudo apt-mark hold shipstation

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

dnf --showduplicates list shipstation sudo dnf downgrade shipstation-<VERSION_BEFORE_1.0> sudo dnf versionlock add shipstation

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-2020-8889?

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

Is CVE-2020-8889 being exploited?

CVE-2020-8889 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-2020-8889 affect?

CVE-2020-8889 affects shipstation. Severity is high (CVSS 7.5). The ShipStation.com plugin 1.0 for CS-Cart allows remote attackers to obtain sensitive information (via action=export) because a typo results in a successful comparison of a blank password and NULL.

How urgent is CVE-2020-8889?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-9009 LOW 3.7 UPGRADE The ShipStation.com plugin 1.1 and earlier for CS-Cart allows remote attackers to insert arbitrary information

References

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