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Vaadin vulnerable to possible information disclosure of class and method names in RPC responseGHSA-ch48-9r3q-pv7x

LOWFix: vaadin/flow#16935

GHSA-ch48-9r3q-pv7x is a low-severity (CVSS 3.5) Information Exposure vulnerability in com.vaadin:flow-server. A fix is available for com.vaadin:flow-server — see the affected versions and patch details below.

Also known asCVE-2023-25500
Published
Updated
Affected
12 pkgs
Patched
12 / 12
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-ch48-9r3q-pv7x.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk+0.00%
Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk
0.00%0.34%0.68%1.02%0.3%0.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

12 pkgs affected
☕com.vaadin:flow-server☕com.vaadin:flow-server☕com.vaadin:flow-server☕com.vaadin:flow-server☕com.vaadin:flow-server☕com.vaadin:flow-server☕com.vaadin:vaadin☕com.vaadin:vaadin+4 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

https://vaadin.com/security/cve-2023-25500

Affected Packages

12 total 12 fixed
EcosystemPackageVulnerable rangeFix
☕Mavencom.vaadin:flow-server≥ 1.0.0&&< 1.0.211.0.21com.vaadin:flow-server:1.0.21
☕Mavencom.vaadin:flow-server≥ 1.1.0&&< 2.9.32.9.3com.vaadin:flow-server:2.9.3
☕Mavencom.vaadin:flow-server≥ 3.0.0&&< 9.1.29.1.2com.vaadin:flow-server:9.1.2
☕Mavencom.vaadin:flow-server≥ 23.0.0&&< 23.3.1323.3.13com.vaadin:flow-server:23.3.13
☕Mavencom.vaadin:flow-server≥ 24.0.0&&< 24.0.924.0.9com.vaadin:flow-server:24.0.9
☕Mavencom.vaadin:flow-server≥ 24.1.alpha1&&< 24.1.024.1.0com.vaadin:flow-server:24.1.0

Affected Products

1 product · 16 configurations
Application
vaadinvaadin
≥ 24.0.0 && ≤ 22.0.28
1 version
24.1.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.vaadin:flow-server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update com.vaadin:flow-server to 1.0.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-ch48-9r3q-pv7x is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

### 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. https://vaadin.com/security/cve-2023-25500
O3 Security · Impact-Aware SCA

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