---
title: "CVE-2018-14773: An issue was discovered in Http… | CubePath"
description: "An issue was discovered in Http Foundation in Symfony 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0…"
language: en
source: https://cubepath.com/security/cve/CVE-2018-14773
---

# CVE-2018-14773: An issue was discovered in Http… | CubePath

## Description

An issue was discovered in Http Foundation in Symfony 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0 through 4.0.13, and 4.1.0 through 4.1.2\. It arises from support for a (legacy) IIS header that lets users override the path in the request URL via the X-Original-URL or X-Rewrite-URL HTTP request header. These headers are designed for IIS support, but it's not verified that the server is in fact running IIS, which means anybody who can send these requests to an application can trigger this. This affects \\Symfony\\Component\\HttpFoundation\\Request::prepareRequestUri() where X-Original-URL and X\_REWRITE\_URL are both used. The fix drops support for these methods so that they cannot be used as attack vectors such as web cache poisoning.

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-14773)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.57638 (57.6% probability)

Percentile

99.1%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [104943](http://www.securityfocus.com/bid/104943)  (securityfocus.com) vdb-entry
- [drupal.org/SA-CORE-2018-005](https://www.drupal.org/SA-CORE-2018-005)
- [\[debian-lts-announce\] 20190310 \[SECURITY\] \[DLA 1707-1\] symfony security update](https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html)  (lists.debian.org) mailing-list
- [symfony.com/blog/cve-2018-14773-remove-support-for-legacy-a…](https://symfony.com/blog/cve-2018-14773-remove-support-for-legacy-and-risky-http-headers)
- [github.com/symfony/symfony/commit/e447e8b92148ddb3d1956b966…](https://github.com/symfony/symfony/commit/e447e8b92148ddb3d1956b96638600ec95e08f6b)
- [1041405](http://www.securitytracker.com/id/1041405)  (securitytracker.com) vdb-entry
- [DSA-4441](https://www.debian.org/security/2019/dsa-4441)  (debian.org) vendor-advisory
- [20190510 \[SECURITY\] \[DSA 4441-1\] symfony security update](https://seclists.org/bugtraq/2019/May/21)  (seclists.org) mailing-list

## Timeline

1. ID reserved Jul 31, 2018
2. Record published Aug 3, 2018
3. Record last updated Aug 5, 2024

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:00 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)