CVE-2021-29943

mediumpriority · track · 38OT risk · elevatedEPSS 0.047 · 92 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

4.67% (92nd) EPSS

CVSS 6.4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-24

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

Technical severity, 0–10. One row per scoring source.

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.4–9.1

v2.06.4mediumAV:N/AC:L/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 4.9

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 5.2

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · OSV

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863USprimaryCWE-863US

affected products (4)

Products and version ranges known to be affected.

Apache Software Foundation Apache SolrApache Solr → 8.8.2enisa_euvdEU
apache solr< 8.8.2nvdUScpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
Bitnami solr< 8.8.2osvUSpkg:bitnami/solr
Maven org.apache.solr:solr-parent< 8.8.2osvUSpkg:maven/org.apache.solr/solr-parent

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-vf7p-j8x6-xvwpIncorrect Authorization in Apache Solr2021-05-10ghsa · osvUS
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.
BIT-solr-2021-29943Apache Solr Unprivileged users may be able to perform unauthorized read/write to collections2024-03-06vendor · osvUS
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.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2021-04-13modified 2026-06-17

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+4983 more

references (10)

External citations — patches, advisories, analysis.

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