# CVE-2023-25500: Vaadin vulnerable to possible information disclosure of class and method names in RPC response > Attackers can disclose internal class and method names by sending modified RPC requests to Vaadin applications, potentially aiding further attacks. - **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 22 Jun 2023 - **Updated:** 14 Sep 2026 - **Also known as:** GHSA-ch48-9r3q-pv7x ## What is CVE-2023-25500? CVE-2023-25500 is a low-severity vulnerability in flow-server, published on 22 Jun 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link. ### Official description Possible information disclosure in Vaadin 10.0.0 to 10.0.23, 11.0.0 to 14.10.1, 15.0.0 to 22.0.28, 23.0.0 to 23.3.13, 24.0.0 to 24.0.6, 24.1.0.alpha1 to 24.1.0.rc2, resulting in potential information disclosure of class and method names in RPC responses by sending modified requests. Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) ## Which versions are affected by CVE-2023-25500? 24 open source packages ship an affected version, including com.vaadin:flow-server and com.vaadin:vaadin. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `com.vaadin:flow-server` | Maven | From 1.0.0 | 1.0.21 | | `com.vaadin:flow-server` | Maven | From 1.0.0 | 1.0.21 | | `com.vaadin:flow-server` | Maven | From 1.1.0 | 2.9.3 | | `com.vaadin:flow-server` | Maven | From 1.1.0 | 2.9.3 | | `com.vaadin:flow-server` | Maven | From 23.0.0 | 23.3.13 | | `com.vaadin:flow-server` | Maven | From 23.0.0 | 23.3.13 | | `com.vaadin:flow-server` | Maven | From 24.0.0 | 24.0.9 | | `com.vaadin:flow-server` | Maven | From 24.0.0 | 24.0.9 | | `com.vaadin:flow-server` | Maven | From 24.1.alpha1 | 24.1.0 | | `com.vaadin:flow-server` | Maven | From 24.1.alpha1 | 24.1.0 | | `com.vaadin:flow-server` | Maven | From 3.0.0 | 9.1.2 | | `com.vaadin:flow-server` | Maven | From 3.0.0 | 9.1.2 | | `com.vaadin:vaadin` | Maven | From 10.0.0 | 10.0.24 | | `com.vaadin:vaadin` | Maven | From 10.0.0 | 10.0.24 | | `com.vaadin:vaadin` | Maven | From 11.0.0 | 14.10.2 | | `com.vaadin:vaadin` | Maven | From 11.0.0 | 14.10.2 | | `com.vaadin:vaadin` | Maven | From 15.0.0 | 22.1.0 | | `com.vaadin:vaadin` | Maven | From 15.0.0 | 22.1.0 | | `com.vaadin:vaadin` | Maven | From 23.0.0 | 23.3.14 | | `com.vaadin:vaadin` | Maven | From 23.0.0 | 23.3.14 | | `com.vaadin:vaadin` | Maven | From 24.0.0 | 24.0.7 | | `com.vaadin:vaadin` | Maven | From 24.0.0 | 24.0.7 | | `com.vaadin:vaadin` | Maven | From 24.1.0.alpha1 | 24.1.0 | | `com.vaadin:vaadin` | Maven | From 24.1.0.alpha1 | 24.1.0 | Products: Vaadin Vaadin. ## How do I fix CVE-2023-25500? Upgrade com.vaadin:flow-server to a fixed version for your release line: 1.0.21, 2.9.3, 23.3.13 or 24.0.9. ## Is CVE-2023-25500 being exploited? There is no known exploitation of CVE-2023-25500 in the wild and no public exploit code. ## Other vulnerabilities in flow-server - [CVE-2021-31409](https://insights.sbomify.com/CVE-2021-31409/): Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19 (high 7.5) - [CVE-2020-36320](https://insights.sbomify.com/CVE-2020-36320/): Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7 (high 7.5) - [CVE-2021-33611](https://insights.sbomify.com/CVE-2021-33611/): Reflected cross-site scripting in vaadin-menu-bar webjar resources in Vaadin 14 (medium 6.1) - [CVE-2023-25499](https://insights.sbomify.com/CVE-2023-25499/): Possible information disclosure in non visible components (medium 5.7) - [CVE-2022-29567](https://insights.sbomify.com/CVE-2022-29567/): Possible information disclosure inside TreeGrid component with default data provider (medium 5.7) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2023-25500 and fix it if it is affected. What it is: CVE-2023-25500 is a low-severity vulnerability in flow-server, published on 22 Jun 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2023-25500 in the wild and no public exploit code. Affected packages and fixed versions: - com.vaadin:flow-server (Maven): affected from 1.0.0; fixed in 1.0.21 - com.vaadin:flow-server (Maven): affected from 1.0.0; fixed in 1.0.21 - com.vaadin:flow-server (Maven): affected from 1.1.0; fixed in 2.9.3 - com.vaadin:flow-server (Maven): affected from 1.1.0; fixed in 2.9.3 - com.vaadin:flow-server (Maven): affected from 23.0.0; fixed in 23.3.13 - com.vaadin:flow-server (Maven): affected from 23.0.0; fixed in 23.3.13 - com.vaadin:flow-server (Maven): affected from 24.0.0; fixed in 24.0.9 - com.vaadin:flow-server (Maven): affected from 24.0.0; fixed in 24.0.9 - com.vaadin:flow-server (Maven): affected from 24.1.alpha1; fixed in 24.1.0 - com.vaadin:flow-server (Maven): affected from 24.1.alpha1; fixed in 24.1.0 - com.vaadin:flow-server (Maven): affected from 3.0.0; fixed in 9.1.2 - com.vaadin:flow-server (Maven): affected from 3.0.0; fixed in 9.1.2 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-2023-25500/ (Markdown: https://insights.sbomify.com/CVE-2023-25500/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2023-25500 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-25500 - OSV: https://osv.dev/vulnerability/CVE-2023-25500 --- From sbomify Insights: https://insights.sbomify.com/CVE-2023-25500/ Summaries are generated and may contain mistakes; the official description above is the record.