CVE-2021-20750

mediumpriority · track · 25EPSS 0.016 · 75 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.56% (75th) EPSS

CVSS 4.3 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

Cross-site scripting vulnerability in EC-CUBE EC-CUBE 3.0.0 to 3.0.18-p2 (EC-CUBE 3 series) and EC-CUBE 4.0.0 to 4.0.5-p1 (EC-CUBE 4 series) allows a remote attacker to inject an arbitrary script by leading an administrator or a user to a specially crafted page and to perform a specific operation.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · OSV

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79US

affected products (7)

Products and version ranges known to be affected.

EC-CUBE CO.,LTD. EC-CUBE≤ EC-CUBE 3.0.0 to 3.0.18-p2 (EC-CUBE 3 series) and EC-CUBE 4.0.0 to 4.0.5-p1 (EC-CUBE 4 series)enisa_euvdEU
ec-cube ec-cube3.0.0 → 3.0.18nvdUScpe:2.3:a:ec-cube:ec-cube:*:*:*:*:*:*:*:*
ec-cube ec-cube= 3.0.18nvdUScpe:2.3:a:ec-cube:ec-cube:*:*:*:*:*:*:*:*
ec-cube ec-cube4.0.0 → 4.0.5nvdUScpe:2.3:a:ec-cube:ec-cube:*:*:*:*:*:*:*:*
ec-cube ec-cube= 4.0.5nvdUScpe:2.3:a:ec-cube:ec-cube:*:*:*:*:*:*:*:*
Packagist ec-cube/ec-cube3.0.0 → 3.0.18-p2osvUSpkg:composer/ec-cube/ec-cube
Packagist ec-cube/ec-cube4.0.0 → 4.0.6osvUSpkg:composer/ec-cube/ec-cube

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-vrpv-26fm-7vf7EC-CUBE Cross-site scripting vulnerability2022-05-24ghsa · osvUS
Cross-site scripting vulnerability in EC-CUBE EC-CUBE 3.0.0 to 3.0.18-p2 (EC-CUBE 3 series) and EC-CUBE 4.0.0 to 4.0.5-p1 (EC-CUBE 4 series) allows a remote attacker to inject an arbitrary script by leading an administrator or a user to a specially crafted page and to perform a specific operation.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-06-28modified 2026-06-17

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+53008 more

references (11)

External citations — patches, advisories, analysis.

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