CVE-2024-45216 | Apache Solr: Authentication bypass possible using a fake URL Path ending

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.

Published: 2024-10-16 Last update: 2025-07-01 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-45216 is rated High Risk (74.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 94.08%, 100th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-45216

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-24 93.99% 94.08% +0.09%
2 2025-11-21 92.93% 93.99% +1.06%
3 2025-11-18 — 92.93% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-45216

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-45216

GitHub Security Advisory for CVE-2024-45216

GHSA-mjvf-4h88-6xm3 · Severity: critical · Ecosystem: maven — Improper Authentication vulnerability in Apache Solr

OS Trackers for CVE-2024-45216

vendor priority summary link
debian unimportant CVE-2024-45216 unimportant priority: Debian including 1 source packages (lucene-solr), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2024-45216
ubuntu medium CVE-2024-45216 medium priority: Ubuntu including 1 source packages (lucene-solr), 10 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 7, ignored 2, not-affected 1. https://ubuntu.com/security/CVE-2024-45216

Affected software / configurations for CVE-2024-45216

Vendor Product Version Raw CPE
apache solr >= 5.3.0, < 8.11.4 cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
apache solr >= 9.0.0, < 9.7.0 cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*

References for CVE-2024-45216

cvelogic Threat Intelligence