---
title: "CVE-2024-38821: Spring Security vulnerable to Authorization Bypass of Static Resources in WebFlux Applications"
url: https://erroneo.us/security/cve/CVE-2024-38821/
description: "CVE-2024-38821 (org.springframework.security:spring-security-web (Maven)): Spring WebFlux applications that have Spring Security authorization rules on…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-10-28
date_modified: 2026-08-31
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-38821"
kev: false
cvss: 9.3
epss: 0.01741
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-38821: Spring Security vulnerable to Authorization Bypass of Static Resources in WebFlux Applications

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.7% , percentile 78: FIRST’s model estimates a 1.7% chance of exploitation activity in the next 30 days, higher than 78% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes org.springframework.security:spring-security-web (Maven) >= 5.8.0, < 5.8.15, fixed in 5.8.15 ; org.springframework.security:spring-security-web (Maven) >= 6.2.0, < 6.2.7, fixed in 6.2.7 ; org.springframework.security:spring-security-web (Maven) >= 6.0.0, < 6.0.13, fixed in 6.0.13 ; org.springframework.security:spring-security-web (Maven) >= 6.1.0, < 6.1.11, fixed in 6.1.11 . Check your lockfile, including transitive dependencies.

## What it is

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

## Affected packages

- Maven `org.springframework.security:spring-security-web` >= 5.8.0, < 5.8.15 → fixed: 5.8.15
- Maven `org.springframework.security:spring-security-web` >= 6.2.0, < 6.2.7 → fixed: 6.2.7
- Maven `org.springframework.security:spring-security-web` >= 6.0.0, < 6.0.13 → fixed: 6.0.13
- Maven `org.springframework.security:spring-security-web` >= 6.1.0, < 6.1.11 → fixed: 6.1.11
- Maven `org.springframework.security:spring-security-web` >= 6.3.0, < 6.3.4 → fixed: 6.3.4
- Maven `org.springframework.security:spring-security-web` >= 5.0.0, < 5.7.13 → fixed: 5.7.13

## Affected products (CVE record)

- Spring Spring: 5.7.x < 5.7.13, 5.8.x < 5.8.15, 6.0.x < 6.0.13, 6.1.x < 6.1.11, 6.2.x < 6.2.7, 6.3.x < 6.3.4

## Severity

- vmware CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.74% probability of exploitation activity in the next 30 days; percentile 78.

## Sources

- [GitHub Advisory GHSA-c4q5-6c82-3qpw](https://github.com/advisories/GHSA-c4q5-6c82-3qpw)
- [CVE.org record CVE-2024-38821](https://www.cve.org/CVERecord?id=CVE-2024-38821)
- [NVD entry CVE-2024-38821](https://nvd.nist.gov/vuln/detail/CVE-2024-38821)
- [spring.io](https://spring.io/security/cve-2024-38821)
- [security.netapp.com](https://security.netapp.com/advisory/ntap-20250124-0006/)
- [github.com](https://github.com/spring-projects/spring-security/commit/0e257b56ce35402558a260ffa6b368982f9a7934)
- [github.com](https://github.com/spring-projects/spring-security/commit/4ce7cde15599c0447163fd46bac616e03318bf5b)
- [github.com](https://github.com/spring-projects/spring-security/commit/b4f27777556c157ec5689c0769322c90be984514)

---
Source page: https://erroneo.us/security/cve/CVE-2024-38821/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt