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Fencer Vulns
high 8.8

CVE-2020-13941 json

Improper Input Validation in Apache Solr

published 2020-08-17 6 y ago modified 2026-09-08 2 mo ago also BIT-solr-2020-13941 , EUVD-2022-0754 , GHSA-2467-h365-j7hm

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Reported in SOLR-14515 (private) and fixed in SOLR-14561 (public), released in Solr version 8.6.0. The Replication handler (https://lucene.apache.org/solr/guide/8_6/index-replication.html#http-api-commands-for-the-replicationhandler) allows commands backup, restore and deleteBackup. Each of these take a location parameter, which was not validated, i.e you could read/write to any location the solr user can access.

Patch / fix

  • maven org.apache.solr:solr-parent 8.6.0
  • bitnami solr 8.6.0
  • apache solr 8.6.0
  • lucene-solr Debian 14, Debian 13, Debian 12 3.6.2+dfsg-23

debian advisories DEBIAN-CVE-2020-13941

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-2020-13941 updated cvss 8.8

solr: replication handler allows a read-write operations to any location the solr user can access

  • Red Hat JBoss Data Virtualization 6 solr-core Red Hat JBoss Enterprise Application Platform 6 solr-core Red Hat JBoss Fuse Service Works 6 solr-core
    affected: no fix planned “Out of support scope”
  • Red Hat Fuse 7 camel-solr camel-solr Red Hat Integration Camel K 1 camel-solr camel-solr Red Hat JBoss Fuse 6 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

Exploit prediction

5.26% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
OSV 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.solr:solr-parent
<8.6.0
8.6.0
bitnami solr
<8.6.0
8.6.0

Affected products

  • n/a Apache Solr

Classification

Weakness
  • CWE-20 Improper Input Validation

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.