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Fencer Vulns
high 7.5

CVE-2023-50298 json

Apache Solr: Solr can expose ZooKeeper credentials via Streaming Expressions

published 2024-02-09 2 y ago modified 2026-09-10 1 mo ago also BIT-solr-2023-50298 , EUVD-2024-0771 , GHSA-xrj7-x7gp-wwqr

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Solr.This issue affects Apache Solr: from 6.0.0 through 8.11.2, from 9.0.0 before 9.4.1.

Solr Streaming Expressions allows users to extract data from other Solr Clouds, using a "zkHost" parameter. When original SolrCloud is setup to use ZooKeeper credentials and ACLs, they will be sent to whatever "zkHost" the user provides. An attacker could setup a server to mock ZooKeeper, that accepts ZooKeeper requests with credentials and ACLs and extracts the sensitive information, then send a streaming expression using the mock server's address in "zkHost". Streaming Expressions are exposed via the "/streaming" handler, with "read" permissions.

Users are recommended to upgrade to version 8.11.3 or 9.4.1, which fix the issue. From these versions on, only zkHost values that have the same server address (regardless of chroot), will use the given ZooKeeper credentials and ACLs when connecting.

Patch / fix

  • maven org.apache.solr:solr-solrj-streaming 8.11.3, 9.4.1
  • maven org.apache.solr:solr-solrj 8.11.3, 9.4.1
  • bitnami solr 8.11.3, 9.4.1
  • Apache Software Foundation Apache Solr 9.4.1
  • apache solr 9.4.1
  • lucene-solr Debian 14, Debian 13, Debian 12 3.6.2+dfsg-23

debian advisories DEBIAN-CVE-2023-50298

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-50298 updated cvss 7.5

solr: possible exposure of ZooKeeper credentials via Streaming Expressions

  • Red Hat Data Grid 8 solr solr Red Hat Fuse 7 solr solr Red Hat Integration Camel K 1 camel-solr camel-solr Red Hat JBoss Enterprise Application Platform 6 solr-core Red Hat JBoss Enterprise Application Platform 8 solr-core
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.56% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.solr:solr-solrj-streaming
>=9.0.0, <9.4.1
>=6.0.0, <8.11.3
9.4.1
8.11.3
maven org.apache.solr:solr-solrj
>=9.0.0, <9.4.1
>=6.0.0, <8.11.3
9.4.1
8.11.3
bitnami solr
>=6.0.0, <8.11.3
>=9.0.0, <9.4.1
8.11.3
9.4.1

Affected products

  • Apache Software Foundation Apache Solr
  • apache solr

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-922 Insecure Storage of Sensitive Information

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.