CVE-2026-40994 Wss4jSecurityInterceptor disables WS-I BSP validation by default
Spring Web Services disables WS-I BSP validation by default, allowing attackers to bypass protocol-level security checks on WS-Security messages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-40994?
CVE-2026-40994 is a high-severity vulnerability in Spring Web Services, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Wss4jSecurityInterceptor initialized its BSP (WS-I Basic Security Profile) compliance flag so that inbound validation disabled WSS4J BSP enforcement on RequestData. Services that validate WS-Security on the network could therefore accept messages that violate BSP rules, weakening protocol-level checks.
Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.
Weakness: CWE-1188
Which versions are affected by CVE-2026-40994?
8 open source packages ship an affected version, including org.springframework.ws:spring-ws-security. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.springframework.ws:spring-ws-security Maven | From 3.1.0 to 3.1.8 | None |
org.springframework.ws:spring-ws-security Maven | From 3.1.0 to 3.1.8 | None |
org.springframework.ws:spring-ws-security Maven | From 4.0.0 to 4.0.18 | None |
org.springframework.ws:spring-ws-security Maven | From 4.0.0 to 4.0.18 | None |
org.springframework.ws:spring-ws-security Maven | From 4.1.0 | 4.1.4 |
org.springframework.ws:spring-ws-security Maven | From 4.1.0 | 4.1.4 |
2 more packages
org.springframework.ws:spring-ws-security Maven | From 5.0.0 | 5.0.2 |
org.springframework.ws:spring-ws-security Maven | From 5.0.0 | 5.0.2 |
Products include Broadcom Spring Web Services.
How do I fix CVE-2026-40994?
Upgrade org.springframework.ws:spring-ws-security to a fixed version for your release line: 4.1.4 or 5.0.2.
Is CVE-2026-40994 being exploited?
There is no known exploitation of CVE-2026-40994 in the wild and no public exploit code.
Other vulnerabilities in Spring Web Services
- CVE-2019-3773 Spring Web Services XML External Entity Injection (XXE)
- CVE-2026-40999 Spring WS SSRF via unvalidated WS-Addressing reply destinations
- CVE-2026-40998 Jaxp13 XPath XXE via StreamSource and SAXSource
- CVE-2026-40995 X.509 authentication bypasses Spring Security account checks
- CVE-2026-40997 SOAP security faults leak Spring Security account state
Sources
Also known as GHSA-gg9r-wr4p-w63h, ROOT-APP-MAVEN-CVE-2026-40994, UBUNTU-CVE-2026-40994.