CVE-2024-38821 | Authorization Bypass of Static Resources in WebFlux Applications

Spring WebFlux applications that have Spring Security authorization rules on static resources can be bypassed under certain circumstances. For this to impact an application, all of the following must be true: * It must be a WebFlux application * It must be using Spring's static resources support * It must have a non-permitAll authorization rule applied to the static resources support

Published: 2024-10-28 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-38821 is rated Moderate Risk (57.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.71%). Review affected assets and schedule 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-2024-38821

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 2026-06-15 13.09% 1.71% -11.38%
2 2026-03-19 10.08% 13.09% +3.01%
3 2025-12-06 — 10.08% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-38821

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N 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:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]

Weakness enumeration for CVE-2024-38821

GitHub Security Advisory for CVE-2024-38821

GHSA-c4q5-6c82-3qpw · Severity: critical · Ecosystem: maven — Spring Security vulnerable to Authorization Bypass of Static Resources in WebFlux Applications

OS Trackers for CVE-2024-38821

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2024-38821

Affected software / configurations for CVE-2024-38821

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2024-38821

cvelogic Threat Intelligence