# CVE-2026-44825: Apache Solr: Enabling BasicAuth using bin/solr CLI configures additional insecure users

- Exploited (CISA KEV): no
- Published: 2026-06-01
- CVSS: 8.1 HIGH (v3.1)
- EPSS: 3.9% (90th percentile)
- CWE: CWE-798, CWE-1188

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

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2026-10-21 | 142 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2026-10-21 · new · rule 200013232
  > Added: signature 200013232 "Apache Solr Authentication Bypass (2)" (Authentication/Authorization Attacks, risk High), systems: Apache. References: CVE-2026-44825.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 3 requests blocked), template CVE-2026-44825, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 3 requests blocked), template CVE-2026-44825, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-44825 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-44825