CVE-2025-41243 | Spring Expression Language property modification using Spring Cloud Gateway Server WebFlux

Spring Cloud Gateway Server Webflux may be vulnerable to Spring Environment property modification. An application should be considered vulnerable when all the following are true: * The application is using Spring Cloud Gateway Server Webflux (Spring Cloud Gateway Server WebMVC is not vulnerable). * Spring Boot actuator is a dependency. * The Spring Cloud Gateway Server Webflux actuator web endpoint is enabled via management.endpoints.web.exposure.include=gateway. * The actuator endpoints are available to attackers. * The actuator endpoints are unsecured.

Published: 2025-09-16 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-41243 is rated High Risk (71.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.42%, 91th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: 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-2025-41243

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 2026-05-12 7.26% 6.42% -0.84%
2 2026-05-03 5.48% 7.26% +1.78%
3 2026-03-24 5.48%

Full EPSS history (27 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-41243

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
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 6.0 [email protected]

Weakness enumeration for CVE-2025-41243

GitHub Security Advisory for CVE-2025-41243

GHSA-q2cj-h8fw-q4cc · Severity: critical · Ecosystem: maven — Spring Expression language property modification using Spring Cloud Gateway Server WebFlux

Affected software / configurations for CVE-2025-41243

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-41243

cvelogic Threat Intelligence