# CVE-2026-48011: Shopware username enumeration via timing attack in admin panel

Source: https://junglewise.ai/threats/cve-2026-48011-shopware-username-enumeration-via-timing-attack-in-admin-panel  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-10. Updated: 2026-06-10  
License: CC BY 4.0 with a link back

CVE-2026-48011 · Severity: low · CVSS 3.7 · Published 2026-06-10

Shopware is an open-source e-commerce platform used by businesses to manage online stores. A security flaw in the administrator login process allows unauthorized individuals to determine which usernames exist on the system by measuring how long the server takes to respond to login attempts. This information can be used to launch more effective targeted cyberattacks, such as password guessing or social engineering, against specific staff members.

Technologies: [shopware/core (Packagist)](https://junglewise.ai/threats/technologies/shopware-core), [shopware/platform (Packagist)](https://junglewise.ai/threats/technologies/shopware-platform), [Shopware](https://junglewise.ai/threats/technologies/shopware). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist), [Shopware](https://junglewise.ai/threats/vendors/shopware).

## Quick answers

**Is CVE-2026-48011 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48011 being exploited in the wild.

**How severe is CVE-2026-48011?** Low severity, with a CVSS score of 3.7, published 10 June 2026.

**Which products and versions are affected?** shopware/core (Packagist) ECOSYSTEM:introduced=6.7.0.0,fixed=6.7.10.1; shopware/platform (Packagist) ECOSYSTEM:introduced=6.7.0.0,fixed=6.7.10.1; Shopware >= 6.7.0.0, < 6.7.10.1; < 6.6.10.18.

**Is there a fix for CVE-2026-48011?** Yes. shopware/core (Packagist): upgrade to 6.7.10.1 or later; shopware/platform (Packagist): upgrade to 6.7.10.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-48011 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-48011?** Check whether you run shopware/core (Packagist), shopware/platform (Packagist) or Shopware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- shopware/core (Packagist): upgrade to 6.7.10.1 or later

  ```sh
  composer require shopware/core:^6.7.10.1
  ```

- shopware/platform (Packagist): upgrade to 6.7.10.1 or later

  ```sh
  composer require shopware/platform:^6.7.10.1
  ```


## Technical details

A timing discrepancy exists in the `getUserEntityByUserCredentials` method within `UserRepository.php`. The application performs an early return if a username is not found in the database, whereas it proceeds to execute the computationally expensive `password_verify` function (using Argon2id) if the username exists. By measuring the response time of requests to the `api/oauth/token` endpoint, a remote attacker can distinguish between valid and invalid administrator usernames. This vulnerability is classified as CWE-208 (Observable Timing Discrepancy). The issue is resolved in versions 6.6.10.18 and 6.7.10.1 by ensuring a dummy hash is verified even when a user is not found.

## Affected products

- Shopware Shopware >= 6.7.0.0, < 6.7.10.1; < 6.6.10.18

## Identifiers

- CVE-2026-48011
- GHSA-7w52-7jvm-m9vw

## Timeline

- 2026-05-19: patched: Security releases 6.6.10.18 and 6.7.10.1 published
- 2026-06-10: disclosed: CVE-2026-48011 published

## References

- [https://github.com/shopware/shopware/releases/tag/v6.6.10.18](https://github.com/shopware/shopware/releases/tag/v6.6.10.18)
- [https://github.com/shopware/shopware/releases/tag/v6.7.10.1](https://github.com/shopware/shopware/releases/tag/v6.7.10.1)
- [https://github.com/shopware/shopware/security/advisories/GHSA-7w52-7jvm-m9vw](https://github.com/shopware/shopware/security/advisories/GHSA-7w52-7jvm-m9vw)

## Related threats

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- [Shopware stored XSS via unsanitized SVG file upload](https://junglewise.ai/threats/cve-2026-48015-shopware-stored-xss-via-unsanitized-svg-file-upload)