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CVE-2020-13941 apache SOLR

Affected softwareapache SOLR
Severity8.8 High CVSS 3.1 2 scores
Fixed in8.6.0
WeaknessImproper input validation (CWE-20)
Published17 Aug 2020
Updated17 Jun 2026

Description

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. The 1 repository below are public GitHub repositories with fewer than 5 stars.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC 1 indexed, none at 5+ stars
  • EPSS 5.3% chance in 30 days

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

IndexArtifactStarsFirst seen
GitHub PoC CVE-2020-13941: Abusing UNC Paths in Windows Environments in Apache Solr 2025-04-14

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

8.8 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H NVD Primary published
CVSS 2.0 6.5 none AV:N/AC:L/Au:S/C:P/I:P/A:P NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.solr:solr-parent 0 8.6.0 unbounded

Products and versions

2 products, 2 version entries
SourceVendorProductSchemeAffected versions
nvd apache solr generic < 8.6.0
osv org.apache.solr solr-parent generic < 8.6.0

References

URLTags
https://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1@%3Ccommits.druid.apache.org%3E WEB
https://lists.apache.org/thread.html/rbcd9dff009ed19ffcc2b09784595fc1098fc802a5472f81795f893be@%3Ccommits.lucene.apache.org%3E WEB
https://lists.apache.org/thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8@%3Ccommits.submarine.apache.org%3E WEB
https://lists.apache.org/thread.html/rf54e7912b7d2b72c63ec54a7afa4adcbf16268dcc63253767dd67d60%40%3Cgeneral.lucene.apache.org%3E WEB
https://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rbcd9dff009ed19ffcc2b09784595fc1098fc802a5472f81795f893be%40%3Ccommits.lucene.apache.org%3E
https://lists.apache.org/thread.html/rc400db37710ee79378b6c52de3640493ff538c2beb41cefdbbdf2ab8%40%3Ccommits.submarine.apache.org%3E

Timeline

Published2020-08-17By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.