CVE-2021-20682 json
OS Command Injection in baserCMS
published 5y ago modified last mo. also GHSA-g39q-f4rm-85x4 , EUVD-2021-1318
- cvss
- 7.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.5%
- EPSS 2.5% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
Patch / fix
- packagist baserproject/basercms 4.4.5
- basercms basercms 4.4.5
- basercms.net/security/JVN64869876 advisory
Is CVE-2021-20682 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
2.48% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
| GitHub | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | baserproject/basercms | <4.4.5 |
4.4.5 |
Affected products
- baserCMS Users Community baserCMS
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
basercms.net
/security/JVN64869876
web, patch, vendor-advisory
-
jvn.jp
/en/jp/JVN64869876/index.html
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-20682
advisory
Sources
- CVE List CVE-2021-20682
- GitHub Advisory GHSA-g39q-f4rm-85x4
- NVD CVE-2021-20682
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.