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Vulnerability record · CVE-2021-29943 · published 13 April 2021

CVE-2021-29943: Apache solr incorrect authorization vulnerability

Apache · Solr

When using ConfigurableInternodeAuthHadoopPlugin for authentication, Apache Solr versions prior to 8.8.2 would forward/proxy distributed requests using server credentials instead of original client credentials. This would result in incorrect authorization resolution on the receiving hosts.

9.1 CVSS 3.1 Critical EPSS 4.7% · top 8.6% CWE-863 · Incorrect authorization
9.1CVSS 3.1 base score, v2 6.4
4.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

When using ConfigurableInternodeAuthHadoopPlugin for authentication, Apache Solr versions prior to 8.8.2 would forward/proxy distributed requests using server credentials instead of original client credentials. This would result in incorrect authorization resolution on the receiving hosts.

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

Affected products

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

References

LinkTags
https://lists.apache.org/thread.html/r91dd0ff556e0c9aab4c92852e0e540c59d4633718ce12881558cf44d%40%3Cusers.solr.apache.or Mailing ListVendor Advisory
https://security.netapp.com/advisory/ntap-20210604-0009/ Third Party Advisory
https://lists.apache.org/thread.html/r91dd0ff556e0c9aab4c92852e0e540c59d4633718ce12881558cf44d%40%3Cusers.solr.apache.or Mailing ListVendor Advisory
https://security.netapp.com/advisory/ntap-20210604-0009/ Third Party Advisory

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

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Source: NIST National Vulnerability Database (record CVE-2021-29943), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.