CVE-2021-20682
OS Command Injection in baserCMS
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
- Record
CVE-2021-20682- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-78
- Updated
- 2026-11-02
CVE List No score
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
- Record
CVE-2021-20682- Updated
- 2026-11-02
EUVDEUVD-2021-1318 No score
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
- Record
EUVD-2021-1318- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g39q-f4rm-85x4
OS Command Injection in baserCMS
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via upload of malicious plugins.
- Record
GHSA-g39q-f4rm-85x4- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
OSV
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
- Record
CVE-2021-20682- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-g39q-f4rm-85x4
OS Command Injection in baserCMS
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via upload of malicious plugins.
- Record
GHSA-g39q-f4rm-85x4- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
baserproject/basercmsPackagist |
before 4.4.5 | 4.4.5 |
baserproject/basercmsPackagist |
before 4.4.5, plus listed versions 0.0.10.0.20.0.30.0.40.0.5 Show 45 moreShow less0.0.60.0.70.0.81.0.02.0.0-rc12.0.0-rc22.0.0-rc32.0.0-rc42.0.0-rc52.0.0-rc63.0.103.0.10.13.0.113.0.11.13.0.123.0.133.0.143.0.153.0.163.0.173.0.183.0.193.0.203.0.213.0.223.0.233.0.243.0.253.0.263.0.73.0.7.13.0.83.0.8.13.0.93.0.9.14.0.04.0.0-beta4.0.14.0.104.0.10.14.0.114.0.24.0.2.14.0.34.0.4 |
4.4.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20682 is a high vulnerability (CVSS 7.2) in Basercms, published March 26, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.48%, the 84th percentile. Fixed in baserproject/basercms 4.4.5.
References
Left out here: 39 versions. The JSON record has them.