CVE-2020-26214
CRITICAL EPSS 99.2%
Published Nov 6, 20205y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Published Nov 6, 2020 5y ago
Last Modified Jun 17, 2026 2w ago
Description
In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
99.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-287 Improper Authentication Authentication
Affected Products 2
| Vendor | Product | Version | Range |
|---|---|---|---|
| alerta_project | alerta | * | <7.5.7 |
| alerta_project | alerta | * | ≥8.0.0 – <8.1.0 |
References 6
- github.com https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65
- github.com https://github.com/alerta/alerta/issues/1277
- github.com https://github.com/alerta/alerta/pull/1345
- github.com https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh
- pypi.org https://pypi.org/project/alerta-server/8.1.0/
- tools.ietf.org https://tools.ietf.org/html/rfc4513#section-5.1.2
Remediation
- github.com https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65