9.1

CVE-2021-29943: apache software foundation apache solr Incorrect Authorization

CVSS: 9.1v3.1CriticalModified
AliasesUBUNTU-CVE-2021-29943GHSA-vf7p-j8x6-xvwpBIT-solr-2021-29943
Published 13-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-29943 is a critical (CVSS 9.1) Incorrect Authorization vulnerability in apache software foundation apache solr. EPSS estimates a 4.67% chance of exploitation in the next 30 days, higher than 91.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
4.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

4.67%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

0.00 pp

From 4.67% on 18-09-2026

18-09-202618-10-2026
EPSS score
4.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
Apache software foundation1 product
Org.apache.solr1 product
  • solr-parent< 8.8.2
Ubuntu1 product
  • lucene-solrAll versions (No fix recorded)

4 vendors · 4 products

References

6 links