← Vulnerability feed

Vulnerability record · CVE-2020-13941 · published 17 August 2020

CVE-2020-13941: Apache solr improper input validation vulnerability

Apache · Solr

Reported in SOLR-14515 (private) and fixed in SOLR-14561 (public), released in Solr version 8.6.0. The Replication handler (https://lucene.apache.org/solr/guide/8_6/index-replication.html#http-api-commands-for-the-replicationhandler) allows commands backup, restore and deleteBackup. Each of these take a location parameter, which was not validated, i.e you could read/write to any location the solr user can access.

8.8 CVSS 3.1 High EPSS 3.9% · top 10.0% CWE-20 · Improper input validation
8.8CVSS 3.1 base score, v2 6.5
3.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Reported in SOLR-14515 (private) and fixed in SOLR-14561 (public), released in Solr version 8.6.0. The Replication handler (https://lucene.apache.org/solr/guide/8_6/index-replication.html#http-api-commands-for-the-replicationhandler) allows commands backup, restore and deleteBackup. Each of these take a location parameter, which was not validated, i.e you could read/write to any location the solr user can access.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/rbcd9dff009ed19ffcc2b09784595fc1098fc802a5472f81795f893be%40%3Ccommits.lucene.apach
https://lists.apache.org/thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8%40%3Ccommits.submarine.ap
https://lists.apache.org/thread.html/rf54e7912b7d2b72c63ec54a7afa4adcbf16268dcc63253767dd67d60%40%3Cgeneral.lucene.apach Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/rbcd9dff009ed19ffcc2b09784595fc1098fc802a5472f81795f893be%40%3Ccommits.lucene.apach
https://lists.apache.org/thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8%40%3Ccommits.submarine.ap
https://lists.apache.org/thread.html/rf54e7912b7d2b72c63ec54a7afa4adcbf16268dcc63253767dd67d60%40%3Cgeneral.lucene.apach Mailing ListVendor Advisory

Track CVE-2020-13941 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed7.5CVE-2019-17558Apache Solr VelocityResponseWriter template injection enables remote code executionApache Solr 5.0.0 through 8.3.1 renders Velocity templates through VelocityResponseWriter, and attacker-supplied templates can execute code. Paramete…KEVEPSS 99%analysed7.2CVE-2019-0193Apache Solr DataImportHandler dataConfig parameter code injectionApache Solr's DataImportHandler accepts a full DIH configuration through the request's dataConfig parameter, and because a DIH config can contain scr…KEVEPSS 84%analysed9.8CVE-2026-44825Apache solr hard-coded credentials vulnerabilityHardcoded 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 …EPSS 2.8%9.8CVE-2024-45216Apache Solr PKIAuthenticationPlugin authentication bypass via fake URL path endingApache Solr instances using the PKIAuthenticationPlugin, enabled by default when Solr Authentication is used, can be bypassed by appending a fake pat…EPSS 93%analysed9.8CVE-2021-44548Apache solr improper input validation vulnerabilityAn Improper Input Validation vulnerability in DataImportHandler of Apache Solr allows an attacker to provide a Windows UNC path resulting in an SMB n…EPSS 5.1%9.8CVE-2021-27905Apache Solr ReplicationHandler masterUrl SSRF flawApache Solr's ReplicationHandler, normally exposed at /replication under a Solr core, accepts a masterUrl (leaderUrl) parameter without validating it…EPSS 93%analysed9.8CVE-2020-13957Apache Solr ConfigSet upload authorization bypass enabling RCEApache Solr versions 6.6.0 to 6.6.6, 7.0.0 to 7.7.3 and 8.0.0 to 8.6.2 block dangerous ConfigSet features that could lead to remote code execution wh…EPSS 79%analysed

Source: NIST National Vulnerability Database (record CVE-2020-13941), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.