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Fencer Vulns
critical 9.8

CVE-2024-45216 in the critical feed json

Apache Solr: Authentication bypass possible using a fake URL Path ending

published 2024-10-16 2 y ago modified 2026-09-08 2 mo ago also BIT-solr-2024-45216 , EUVD-2024-3084 , GHSA-mjvf-4h88-6xm3

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
92.7%
EPSS 92.7% chance of exploitation in 30 days, percentile 99.8%
public exploits
0
none known, plus a Nuclei check

Summary

Improper Authentication vulnerability in Apache Solr.

Solr instances using the PKIAuthenticationPlugin, which is enabled by default when Solr Authentication is used, are vulnerable to Authentication bypass. A fake ending at the end of any Solr API URL path, will allow requests to skip Authentication while maintaining the API contract with the original URL Path. This fake ending looks like an unprotected API path, however it is stripped off internally after authentication but before API routing.

This issue affects Apache Solr: from 5.3.0 before 8.11.4, from 9.0.0 before 9.7.0.

Users are recommended to upgrade to version 9.7.0, or 8.11.4, which fix the issue.

Patch / fix

  • maven org.apache.solr:solr 8.11.4, 9.7.0
  • bitnami solr 8.11.4, 9.7.0
  • Apache Software Foundation Apache Solr 8.11.4, 9.7.0
  • apache solr 8.11.4, 9.7.0

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

92.75% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.solr:solr
>=5.3.0, <8.11.4
>=9.0.0, <9.7.0
8.11.4
9.7.0
bitnami solr
>=5.3.0, <8.11.4
>=9.0.0, <9.7.0
8.11.4
9.7.0

Affected products

  • Apache Software Foundation Apache Solr
  • apache solr

Classification

Weakness

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.