CVE-2024-52012: Apache Solr: Configset upload on Windows allows arbitrary path write-access

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 40.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-01-27 · updated 2026-06-17
Weakness: CWE-23

Description

Relative Path Traversal vulnerability in Apache Solr. Solr instances running on Windows are vulnerable to arbitrary filepath write-access, due to a lack of input-sanitation in the "configset upload" API. Commonly known as a "zipslip", maliciously constructed ZIP files can use relative filepaths to write data to unanticipated parts of the filesystem. This issue affects Apache Solr: from 6.6 through 9.7.0. Users are recommended to upgrade to version 9.8.0, which fixes the issue. Users unable to upgrade may also safely prevent the issue by using Solr's "Rule-Based Authentication Plugin" to restrict access to the configset upload API, so that it can only be accessed by a trusted set of administrators/users.

Affected products

Apache Software Foundation Apache Solr: from 6.6.0 before 9.8.0 — fixed in 9.8.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Solr 9.8.0. Check the vendor advisory for mitigations.

References

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