CVE-2021-20841 json
EC-CUBE Improper access control in Management screen
published 2021-11-24 4 y ago modified 2026-06-17 4 mo ago also GHSA-jc55-crg7-pr35 , EUVD-2021-2362
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
Improper access control in Management screen of EC-CUBE 2 series 2.11.2 to 2.17.1 allows a remote authenticated attacker to bypass access restriction and to alter System settings via unspecified vectors.
Patch / fix
Exploit prediction
1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- ec-cube.net https://www.ec-cube.net/info/weakness/20211111/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | ec-cube/ec-cube | >=2.11.2, <2.17.2 |
2.17.2 |
Affected products
- EC-CUBE CO.,LTD. EC-CUBE 2 series
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
ec-cube.net
/info/weakness/20211111/
exploit, patch, vendor-advisory
-
jvn.jp
/en/jp/JVN75444925/index.html
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-20841
advisory
-
github.com
/EC-CUBE/ec-cube
package
-
ec-cube.net
/info/weakness/20211111
web
Sources
- CVE List CVE-2021-20841
- GitHub Advisory GHSA-jc55-crg7-pr35
- NVD CVE-2021-20841
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