CVE-2021-20876 json
Path traversal vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession…
published 2021-12-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8285
- cvss
- 6.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
Path traversal vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows an attacker with an administrative privilege to obtain sensitive information stored in the hierarchy above the directory on the published site's server via unspecified vectors.
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- Japan Total System Co.,Ltd. GroupSession Free edition, GroupSession byCloud, GroupSession ZION
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
groupsession.jp
/info/info-news/security20211220
vendor-advisory
-
jvn.jp
/en/jp/JVN79798166/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20876
- NVD CVE-2021-20876
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