CVE-2020-21139: EC Cloud E-Commerce System v1.3 was discovered to contain a Cross-Site Request Forgery (CSRF) which allows att

Routine

MEDIUM 6.5DOWNGRADE

CVE-2020-21139 is a medium-severity flaw (CVSS 6.5) affecting ec cloud e-commerce system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

EC Cloud E-Commerce System v1.3 was discovered to contain a Cross-Site Request Forgery (CSRF) which allows attackers to arbitrarily add admin accounts via /admin.html?do=user&act=add.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-352
Published	2021-11-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ec cloud e-commerce system project

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

Am I affected?

Timeline

2021-11-04 20:15 UTCPublished CVE record published
2026-06-17 03:03 UTCUpdated Record last modified

ec cloud e-commerce system project ec cloud e-commerce system DOWNGRADE

Affected: 1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

apt-cache policy ec-cloud-e-commerce-system || rpm -q ec-cloud-e-commerce-system || ec-cloud-e-commerce-system --version

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison ec-cloud-e-commerce-system sudo apt install ec-cloud-e-commerce-system=<VERSION_BEFORE_1.3> sudo apt-mark hold ec-cloud-e-commerce-system

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

dnf --showduplicates list ec-cloud-e-commerce-system sudo dnf downgrade ec-cloud-e-commerce-system-<VERSION_BEFORE_1.3> sudo dnf versionlock add ec-cloud-e-commerce-system

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-2020-21139?

ec cloud e-commerce system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-21139 being exploited?

CVE-2020-21139 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-2020-21139 affect?

CVE-2020-21139 affects ec cloud e-commerce system. Severity is medium (CVSS 6.5). EC Cloud E-Commerce System v1.3 was discovered to contain a Cross-Site Request Forgery (CSRF) which allows attackers to arbitrarily add admin accounts via /admin.html?do=user&act=add.

How urgent is CVE-2020-21139?

Priority 38/100. Public exploit reference

References

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