Apache Solr 9.4.0-9.10.1 Hardcoded BasicAuth Credentials via bin/solr auth enable
CVE-2026-44825 Published on June 1, 2026
Apache Solr: Enabling BasicAuth using bin/solr CLI configures additional insecure users
Hardcoded credentials in the Basic Authentication setup tool (bin/solr auth enable) in Apache Solr versions 9.4.0 through 9.10.1 and 10.0.0 allows a remote attacker to gain full administrative access to the cluster via publicly known default credentials installed silently alongside the user-specified account.
As an immediate workaround without upgrading, delete the template users (superadmin, admin, search, index) from security.json or change their passwords.
The future, not yet released, versions 9.11.0 and 10.1.0 will not be vulnerable, and it will be enough to upgrade to solve the issue.
Not affected:
* Clusters where bin/solr auth enable was not used to bootstrap BasicAuth
* Clusters where template users have been assigned strong passwords after bootstrap
Vulnerability Analysis
CVE-2026-44825 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Types
Use of Hard-coded Credentials
The software contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.
Insecure Default Initialization of Resource
The software initializes or sets a resource with a default that is intended to be changed by the administrator, but the default is not secure.
Products Associated with CVE-2026-44825
Want to know whenever a new CVE is published for Apache Solr? stack.watch will email you.
Affected Versions
Apache Software Foundation Apache Solr:- Version 9.4.0, <= 9.10.1 is affected.
- Version 10.0.0 is affected.