CVE-2020-26214
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 65.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 65.93% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- alerta project/alerta
- Source
- security-advisories@github.com
EPSS 65.9% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65Patch, Third Party Advisory
- https://github.com/alerta/alerta/issues/1277Third Party Advisory
- https://github.com/alerta/alerta/pull/1345Third Party Advisory
- https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jhThird Party Advisory
- https://pypi.org/project/alerta-server/8.1.0/Third Party Advisory
- https://tools.ietf.org/html/rfc4513#section-5.1.2Third Party Advisory
- https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65Patch, Third Party Advisory
- https://github.com/alerta/alerta/issues/1277Third Party Advisory
- https://github.com/alerta/alerta/pull/1345Third Party Advisory
- https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jhThird Party Advisory
- https://pypi.org/project/alerta-server/8.1.0/Third Party Advisory
- https://tools.ietf.org/html/rfc4513#section-5.1.2Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.