CVE-2018-11802Public exploitNetwork attack vector

Restricted collection data exposure via skipped authorization

Published Apr 1, 2020 · Updated Aug 5, 2024

Incorrect authorization in Apache Solr before 6.6.6 and 7.0.0 through 7.6.0 allows remote authenticated users to read restricted data. When a node lacks a requested collection replica, HttpSolrCall enters REMOTEQUERY without initializing SolrRequestInfo, so PKI forwarding loses the user principal and bypasses the RuleBasedAuthorizationPlugin check. Exploitation requires a SolrCloud cluster using that plugin, valid low-privilege credentials, and a request sent through a node that does not host the targeted collection.

CVSS severity4.3
Medium
EPSS probability2.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Apache Solr before 6.6.6 and 7.0.0 through 7.6.0 allows remote authenticated users to read restricted data. When a node lacks a requested collection replica, HttpSolrCall enters REMOTEQUERY without initializing SolrRequestInfo, so PKI forwarding loses the user principal and bypasses the RuleBasedAuthorizationPlugin check. Exploitation requires a SolrCloud cluster using that plugin, valid low-privilege credentials, and a request sent through a node that does not host the targeted collection.

The record

CVE
CVE-2018-11802
Published
Apr 1, 2020
Updated
Aug 5, 2024
Vendor
The Apache Software Foundation
Product
Apache Solr
Classifications
CWE-863, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before 7.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Solrversion=before 7.7

Published CVSS scores

4.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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