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MEDIUM severity

CVE-2018-11802 — solr-parent

MEDIUMFix: apache/lucene-solr@add003f

CVE-2018-11802 is a medium-severity (CVSS 4.3) CWE-863 vulnerability in org.apache.solr:solr-parent. A fix is available for org.apache.solr:solr-parent — see the affected versions and patch details below.

Incorrect Authorization in Apache Solr

Also known asGHSA-j346-h5wc-rw2m
Published
Updated
Affected
4 pkgs
Patched
4 / 4
Exploits
None indexed
Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs81th percentile — riskier than 81% of all scored CVEsHighest risk
0.00%0.86%1.72%2.58%0.2%2.0%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

4 pkgs affected
☕org.apache.solr:solr-parent☕org.apache.solr:solr-parent☕org.apache.solr:solr-core☕org.apache.solr:solr-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

In Apache Solr, the cluster can be partitioned into multiple collections and only a subset of nodes actually host any given collection. However, if a node receives a request for a collection it does not host, it proxies the request to a relevant node and serves the request. Solr bypasses all authorization settings for such requests. This affects all Solr versions prior to 6.6.6 and 7.7 that use the default authorization mechanism of Solr (RuleBasedAuthorizationPlugin).

Affected Packages

4 total 4 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.solr:solr-parent≥ 7.0.0&&< 7.7.07.7.0org.apache.solr:solr-parent:7.7.0
☕Mavenorg.apache.solr:solr-parentall versions6.6.6org.apache.solr:solr-parent:6.6.6
☕Mavenorg.apache.solr:solr-core≥ 7.0.0&&< 7.7.07.7.0org.apache.solr:solr-core:7.7.0
☕Mavenorg.apache.solr:solr-coreall versions6.6.6org.apache.solr:solr-core:6.6.6

Affected Products

1 product · 2 configurations
Application
solrapache
≥ 7.0.0 && < 7.7.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.solr:solr-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.solr:solr-parent to 7.7.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-11802 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

In Apache Solr, the cluster can be partitioned into multiple collections and only a subset of nodes actually host any given collection. However, if a node receives a request for a collection it does not host, it proxies the request to a relevant node and serves the request. Solr bypasses all authorization settings for such requests. This affects all Solr versions prior to 6.6.6 and 7.7 that use the default authorization mechanism of Solr (RuleBasedAuthorizationPlugin).
O3 Security · Impact-Aware SCA

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CVE-2018-11802: solr-parent — Fixed in 7.7.0