CVE-2024-45216Public exploitNetwork attack vector

Unauthenticated API access via stripped path suffix

Published Oct 16, 2024 · Updated Nov 8, 2024

Improper authentication in Apache Solr 5.3.0 before 8.11.4 and 9.0.0 before 9.7.0 allows remote attackers to access protected APIs. PKIAuthenticationPlugin mistakes a :/admin/info/key path suffix for an unprotected endpoint, then API routing strips that suffix before dispatch. The flaw is reachable when Solr authentication uses its default PKIAuthenticationPlugin, granting the unauthenticated caller the targeted API's privileges.

CVSS severity9.8
Critical
EPSS probability91.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Apache Solr 5.3.0 before 8.11.4 and 9.0.0 before 9.7.0 allows remote attackers to access protected APIs. PKIAuthenticationPlugin mistakes a :/admin/info/key path suffix for an unprotected endpoint, then API routing strips that suffix before dispatch. The flaw is reachable when Solr authentication uses its default PKIAuthenticationPlugin, granting the unauthenticated caller the targeted API's privileges.

The record

CVE
CVE-2024-45216
Published
Oct 16, 2024
Updated
Nov 8, 2024
Vendor
The Apache Software Foundation
Product
Apache Solr
Classifications
CWE-287, CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.3.0 <8.11.4
  2. Affected versionversion=9.0.0 <9.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Solrversion=5.3.0 <8.11.4; version=9.0.0 <9.7.0

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.1IBM X-ForceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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