What is CVE-2024-45216?

CVE-2024-45216 is a critical-severity vulnerability in Apache Solr, classified under Improper Authentication. CVSS score: 9.8/10. Published 2024-10-16.

How severe is CVE-2024-45216?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2024-45216 known to be exploited?

27 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Apache Solr

CVE-2024-45216

Improper Authentication vulnerability in Apache Solr. Solr instances using the PKIAuthenticationPlugin, which is enabled by default when Solr Authentication is used, are vulnerable to Authentication bypass. A fake ending at the end of any Solr API URL path, will allow requests to skip Authentication while maintaining the API contract with the original URL Path. This fake ending looks like an unprotected API path, however it is stripped off internally after authentication but before API routing. This issue affects Apache Solr: from 5.3.0 before 8.11.4, from 9.0.0 before 9.7.0. Users are recommended to upgrade to version 9.7.0, or 8.11.4, which fix the issue.

Vulnerability class: Broken Authentication

EPSS: 0.917 (99.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apache Solr
Apache Software Foundation Solr — versions 5.3.0, 9.0.0

Weakness classification (CWE)

Public proof-of-concept exploits

References

security@apache.org (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)

Frequently asked questions

What is CVE-2024-45216?: CVE-2024-45216 is a critical-severity vulnerability in Apache Solr, classified under Improper Authentication. CVSS score: 9.8/10. Published 2024-10-16.
How severe is CVE-2024-45216?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-45216 known to be exploited?: 27 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.