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CVE-2024-45216

Apache Solr authentication bypass

9.8 CRITICALEPSS 92.7%
  1. Published16 Oct 2024

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Solr≥ 5.3.0 < 8.11.4 · ≥ 9.0.0 < 9.7.0

Remediation

Fixed in
Apache Solr≥ 8.11.4

References

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Frequently asked

Is CVE-2024-45216 being actively exploited?

CVE-2024-45216 is not in the CISA KEV catalog. Its EPSS exploit probability is 92.7%.

How severe is CVE-2024-45216?

CVE-2024-45216 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 92.7% probability of exploitation.

Which products are affected by CVE-2024-45216?

Affected products include Apache Solr.

How do I fix CVE-2024-45216?

Upgrade affected software to a fixed version, for example Apache Solr 8.11.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-45216 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.