CVE-2020-29159
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users)...
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users) can be a privileged Role, if configured by an admin. This behvaior was unintended.
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
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users) can be a privileged Role, if configured by an admin. This behvaior was unintended.
- Record
CVE-2020-29159- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Updated
- 2026-11-02
CVE List No score
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users) can be a privileged Role, if configured by an admin. This behvaior was unintended.
- Record
CVE-2020-29159- Updated
- 2026-11-02
EUVDEUVD-2020-21539 No score
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users) can be a privileged Role, if configured by an admin. This behvaior was unintended.
- Record
EUVD-2020-21539- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vp7r-p47m-4jvg No score
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users)...
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users) can be a privileged Role, if configured by an admin. This behvaior was unintended.
- Record
GHSA-vp7r-p47m-4jvg- Updated
- 2026-11-02
OSV
An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users) can be a privileged Role, if configured by an admin. This behvaior was unintended.
- Record
CVE-2020-29159- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-29159 is a medium vulnerability (CVSS 4.9) in Zammad, published December 28, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.93%, the 60th percentile. No source names a fixed version.