# GHSA-256q-hx8w-xcqx: Silverstripe Framework user enumeration via timing attack on login and password reset forms

> Attackers can enumerate valid usernames by measuring response times on login and password reset forms in Silverstripe CMS.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Apr 2025

## What is GHSA-256q-hx8w-xcqx?

GHSA-256q-hx8w-xcqx is a vulnerability in silverstripe/framework, published on 10 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

### Impact
User enumeration is possible by performing a timing attack on the login or password reset pages with user credentials.

This was originally disclosed in https://www.silverstripe.org/download/security-releases/ss-2017-005/ for CMS 3 but was not patched in CMS 4+

### References

- https://www.silverstripe.org/download/security-releases/ss-2017-005
- https://www.silverstripe.org/download/security-releases/ss-2025-001

## Which versions are affected by GHSA-256q-hx8w-xcqx?

2 open source packages ship an affected version, including silverstripe/framework.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `silverstripe/framework` | Packagist | From 4.0.0 | 5.3.23 |
| `silverstripe/framework` | Packagist | From 4.0.0 | 5.3.23 |

## How do I fix GHSA-256q-hx8w-xcqx?

Upgrade silverstripe/framework to 5.3.23 or later.

## Is GHSA-256q-hx8w-xcqx being exploited?

There is no known exploitation of GHSA-256q-hx8w-xcqx in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-256q-hx8w-xcqx and fix it if it is affected.

What it is: GHSA-256q-hx8w-xcqx is a vulnerability in silverstripe/framework, published on 10 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-256q-hx8w-xcqx in the wild and no public exploit code.

Affected packages and fixed versions:
- silverstripe/framework (Packagist): affected from 4.0.0; fixed in 5.3.23
- silverstripe/framework (Packagist): affected from 4.0.0; fixed in 5.3.23

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/GHSA-256q-hx8w-xcqx/ (Markdown: https://insights.sbomify.com/GHSA-256q-hx8w-xcqx/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-256q-hx8w-xcqx

---
From sbomify Insights: https://insights.sbomify.com/GHSA-256q-hx8w-xcqx/
Summaries are generated and may contain mistakes; the official description above is the record.