---
title: "CVE-2018-12040\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-12040?format=md
keywords: index, follow
---

# CVE-2018-12040

Publication date 13 June 2018

Last updated 4 August 2025

---

Ubuntu priority

**Negligible**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**6.1 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2018-12040?format=md#impact-score)

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## Description

Reflected Cross-site scripting (XSS) vulnerability in the web profiler in
SensioLabs Symfony 3.3.6 allows remote attackers to inject arbitrary web
script or HTML via the "file" parameter, aka an \_profiler/open?file= URI.
NOTE: The vendor states "The XSS ... is in the web profiler, a tool that
should never be deployed in production (so, we don't handle those issues as
security issues).

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| symfony | 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.1 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Changed |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.1 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12040)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-12040)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-12040)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-12040)

### Other references

* <https://bugzilla.redhat.com/show_bug.cgi?id=1590702>
* <http://packetstormsecurity.com/files/148125/SensioLabs-Symfony-3.3.6-Cross-Site-Scripting.html>
* <https://www.cve.org/CVERecord?id=CVE-2018-12040>