CVE-2020-5281
LDAP connector injection in Perun
In Perun before version 3.9.1, VO or group manager can modify configuration of the LDAP extSource to retrieve all from Perun LDAP. Issue is fixed in version 3.9.1 by sanitisation of the input.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
LDAP connector injection in Perun
In Perun before version 3.9.1, VO or group manager can modify configuration of the LDAP extSource to retrieve all from Perun LDAP. Issue is fixed in version 3.9.1 by sanitisation of the input.
- Record
CVE-2020-5281- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:N - Weakness
- CWE-90
- Updated
- 2026-11-02
EUVDEUVD-2020-26477
In Perun before version 3.9.1, VO or group manager can modify configuration of the LDAP extSource to retrieve all from Perun LDAP. Issue is fixed in version 3.9.1 by sanitisation of the input.
- Record
EUVD-2020-26477- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:N - Updated
- 2026-11-03
NVD
In Perun before version 3.9.1, VO or group manager can modify configuration of the LDAP extSource to retrieve all from Perun LDAP. Issue is fixed in version 3.9.1 by sanitisation of the input.
- Record
CVE-2020-5281- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-90, CWE-732
- Updated
- 2026-11-02
OSV
In Perun before version 3.9.1, VO or group manager can modify configuration of the LDAP extSource to retrieve all from Perun LDAP. Issue is fixed in version 3.9.1 by sanitisation of the input.
- Record
CVE-2020-5281- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-5281 is a medium vulnerability (CVSS 6.2) in Cesnet Perun, published March 25, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.36%, the 71st percentile. No source names a fixed version.