# CVE-2026-40995: X.509 authentication bypasses Spring Security account checks > Attackers with valid certificates can bypass account status checks like disabled or locked states in Spring Web Services. - **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 11 Jun 2026 - **Updated:** 23 Jun 2026 - **Also known as:** GHSA-6mfm-98wv-32wm ## What is CVE-2026-40995? CVE-2026-40995 is a medium-severity authentication bypass vulnerability in Spring Web Services, published on 11 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certificate mapped to UserDetails, without applying Spring Security's standard account lifecycle checks (disabled, locked, expired, or credentials-expired accounts). 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-287 (Improper Authentication) ## Which versions are affected by CVE-2026-40995? 8 open source packages ship an affected version, including org.springframework.ws:spring-ws-security. It affects 1 product. | Package | Ecosystem | 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 | | `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: Broadcom Spring Web Services. ## How do I fix CVE-2026-40995? Upgrade org.springframework.ws:spring-ws-security to a fixed version for your release line: 4.1.4 or 5.0.2. ## Is CVE-2026-40995 being exploited? There is no known exploitation of CVE-2026-40995 in the wild and no public exploit code. ## Other vulnerabilities in Spring Web Services - [CVE-2019-3773](https://insights.sbomify.com/CVE-2019-3773/): Spring Web Services XML External Entity Injection (XXE) (critical 9.8) - [CVE-2026-40999](https://insights.sbomify.com/CVE-2026-40999/): Spring WS SSRF via unvalidated WS-Addressing reply destinations (high 8.6) - [CVE-2026-40994](https://insights.sbomify.com/CVE-2026-40994/): Wss4jSecurityInterceptor disables WS-I BSP validation by default (high 8.2) - [CVE-2026-40998](https://insights.sbomify.com/CVE-2026-40998/): Jaxp13 XPath XXE via StreamSource and SAXSource (high 8.2) - [CVE-2026-40997](https://insights.sbomify.com/CVE-2026-40997/): SOAP security faults leak Spring Security account state (medium 5.3) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-40995 and fix it if it is affected. What it is: CVE-2026-40995 is a medium-severity authentication bypass vulnerability in Spring Web Services, published on 11 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2026-40995 in the wild and no public exploit code. Affected packages and fixed versions: - org.springframework.ws:spring-ws-security (Maven): affected from 3.1.0 up to 3.1.8; no fix listed - org.springframework.ws:spring-ws-security (Maven): affected from 3.1.0 up to 3.1.8; no fix listed - org.springframework.ws:spring-ws-security (Maven): affected from 4.0.0 up to 4.0.18; no fix listed - org.springframework.ws:spring-ws-security (Maven): affected from 4.0.0 up to 4.0.18; no fix listed - org.springframework.ws:spring-ws-security (Maven): affected from 4.1.0; fixed in 4.1.4 - org.springframework.ws:spring-ws-security (Maven): affected from 4.1.0; fixed in 4.1.4 - org.springframework.ws:spring-ws-security (Maven): affected from 5.0.0; fixed in 5.0.2 - org.springframework.ws:spring-ws-security (Maven): affected from 5.0.0; fixed in 5.0.2 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2026-40995/ (Markdown: https://insights.sbomify.com/CVE-2026-40995/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40995 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40995 - OSV: https://osv.dev/vulnerability/CVE-2026-40995 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-40995/ Summaries are generated and may contain mistakes; the official description above is the record.