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CVE-2020-13957 Apache Solr

Affected softwareApache Solr
Severity9.8 Critical CVSS 3.1 2 scores
Fixed in8.6.3
WeaknessIncorrect authorization (CWE-863)
Published13 Oct 2020
Updated17 Jun 2026

Description

Apache Solr versions 6.6.0 to 6.6.6, 7.0.0 to 7.7.3 and 8.0.0 to 8.6.2 prevents some features considered dangerous (which could be used for remote code execution) to be configured in a ConfigSet that's uploaded via API without authentication/authorization. The checks in place to prevent such features can be circumvented by using a combination of UPLOAD/CREATE actions.

Exploitation status

Forecast only (79% 30-day chance)

No exploit has been reported in the sources we check. EPSS puts this CVE in the top 0.39% of all scored CVEs. That is a model's forecast, not a report of exploitation.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC 1 indexed, none at 5+ stars
  • EPSS 79% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99.6% of all scored CVEs.

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 Apache Solr RCE CVE-2020-13957 1 2021-05-09

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: apache/solr e001c22.

  • 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

9.8 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/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 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published
CVSS 2.0 7.5 none AV:N/AC:L/Au:N/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 6.6.0 8.6.3 unbounded
org.apache.solr:solr-solrj 6.6.0 8.6.3 unbounded
org.apache.solr:solr-core 6.6.0 8.6.3 unbounded

Products and versions

4 products, 6 version entries
SourceVendorProductSchemeAffected versions
nvd apache solr generic ≥ 6.6.0 and ≤ 6.6.6 · ≥ 7.0.0 and ≤ 7.7.3 · ≥ 8.0.0 and ≤ 8.6.2
osv org.apache.solr solr-core generic ≥ 6.6.0 and < 8.6.3
osv org.apache.solr solr-parent generic ≥ 6.6.0 and < 8.6.3
osv org.apache.solr solr-solrj generic ≥ 6.6.0 and < 8.6.3

References

URLTags
https://github.com/apache/solr/commit/e001c2221812a0ba9e9378855040ce72f93eced4 WEB
https://security.netapp.com/advisory/ntap-20201023-0002 WEB
https://mail-archives.us.apache.org/mod_mbox/www-announce/202010.mbox/%3CCAECwjAWCVLoVaZy%3DTNRQ6Wk9KWVxdPRiGS8NT%2BPHMJCxbbsEVg%40mail.gmail.com%3E WEB
https://lists.apache.org/thread.html/rf1a32f00017e83ff29a74be2de02e28e4302dddb5f14c624e297a8c0@%3Cdev.bigtop.apache.org%3E WEB
https://lists.apache.org/thread.html/rb2f1c7fd3d3ea719dfac4706a80e6affddecae8663dda04e1335347f@%3Ccommits.bigtop.apache.org%3E WEB
https://lists.apache.org/thread.html/rb1de6ba50a468e9baff32a249edaa08f6bcec7dd7cc208e25e6b48c8@%3Cissues.bigtop.apache.org%3E WEB
https://lists.apache.org/thread.html/r9d7356f209ee30d702b6a921c866564eb2e291b126640c7ab70feea7@%3Ccommits.lucene.apache.org%3E WEB
https://lists.apache.org/thread.html/r999f828e6e37d9e825e207471cbfd2681c3befcd7f3abd59ed87c0d5@%3Cissues.bigtop.apache.org%3E WEB
https://lists.apache.org/thread.html/r8b1782d42d0a4ce573495d5d9345ad328d652c68c411ccdb245c57e3@%3Cissues.lucene.apache.org%3E WEB
https://lists.apache.org/thread.html/r853fdc6d0b91d5e01a26c7bd5becb044ad775a231703d634ca5d55c9@%3Cissues.lucene.apache.org%3E WEB

Timeline

Published2020-10-13By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.