CVE-2021-3376
An issue was discovered in Cuppa CMS Versions Before 31 Jan 2021 allows authenticated attackers...
An issue was discovered in Cuppa CMS Versions Before 31 Jan 2021 allows authenticated attackers to gain escalated privileges via a crafted POST request using the user_group_id_field parameter.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Cuppa CMS Versions Before 31 Jan 2021 allows authenticated attackers to gain escalated privileges via a crafted POST request using the user_group_id_field parameter.
- Record
CVE-2021-3376- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
An issue was discovered in Cuppa CMS Versions Before 31 Jan 2021 allows authenticated attackers to gain escalated privileges via a crafted POST request using the user_group_id_field parameter.
- Record
CVE-2021-3376- Updated
- 2026-11-02
EUVDEUVD-2021-26707 No score
An issue was discovered in Cuppa CMS Versions Before 31 Jan 2021 allows authenticated attackers to gain escalated privileges via a crafted POST request using the user_group_id_field parameter.
- Record
EUVD-2021-26707- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wxm7-hj84-7p5w
An issue was discovered in Cuppa CMS Versions Before 31 Jan 2021 allows authenticated attackers...
An issue was discovered in Cuppa CMS Versions Before 31 Jan 2021 allows authenticated attackers to gain escalated privileges via a crafted POST request using the user_group_id_field parameter.
- Record
GHSA-wxm7-hj84-7p5w- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-269
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3376 is a high vulnerability (CVSS 8.8) in Cuppacms, published December 14, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.14%, the 66th percentile. No source names a fixed version.