What is CVE-2023-50298?

CVE-2023-50298 is a high-severity vulnerability in Apache Solr, classified under Information Disclosure. CVSS score: 7.5/10. Published 2024-02-09.

How severe is CVE-2023-50298?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-50298 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Apache Solr

CVE-2023-50298

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.

Vulnerability class: Information Disclosure

Published 2024-02-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.016 (75.1th percentile), scored 2026-10-22.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Apache Solr
Apache Software Foundation Solr — versions 6.0.0, 9.0.0

Weakness classification (CWE)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

solr.apache.org/security.html (vendor-advisory, Third Party Advisory)
www.openwall.com/lists/oss-security/2024/02/09/3 (Mailing List)
www.openwall.com/lists/oss-security/2024/02/09/2 (Mailing List)

Frequently asked questions

What is CVE-2023-50298?: CVE-2023-50298 is a high-severity vulnerability in Apache Solr, classified under Information Disclosure. CVSS score: 7.5/10. Published 2024-02-09.
How severe is CVE-2023-50298?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-50298 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.