🛡️ CVE-2018-14774 — symfony

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-20 OSV

8.0

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Symfony Host Header Injection

An issue was discovered in HttpKernel 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. When using HttpCache, the values of the X-Forwarded-Host headers are implicitly set as trusted while this should be forbidden, leading to potential host header injection.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2018-14774 is classified as CWE-20: Improper Input Validation. The application accepts input without checking that it has the expected form, so malformed values reach code that assumes they are well formed.

Affected software

CVE-2018-14774 is recorded against 1 package.

symfony/symfony (from 4.1.0 up to 4.1.3)

Timeline and source

Published on 14 May 2022 and last revised on 16 February 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
symfony.com (Web)

Details

Severity HIGH

CVSS Score 8.0

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

CWE CWE-20

Public Exploit ✅ No

Source OSV

Published 2022-05-14

Updated 2026-08-12

Modified 2024-02-16

Fix URL N/A

Affected Packages

Software	From version	Fixed in
symfony/symfony	4.1.0	4.1.3

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2018-14774

WEB https://github.com/symfony/symfony/commit/725dee4cd8b4ccd52e335ae4b4522242cea9bd4a

WEB https://github.com/symfony/symfony/commit/7f912bbb78377c2ea331b3da28363435fbd91337

WEB https://github.com/symfony/symfony/commit/96504fb8c9f91204727d2930eb837473ce154956

WEB https://github.com/symfony/symfony/commit/974240e178bb01d734bf1df1ad5c3beba6a2f982

WEB https://github.com/symfony/symfony/commit/9cfcaba0bf71f87683510b5f47ebaac5f5d6a5ba

WEB https://github.com/symfony/symfony/commit/bcf5897bb1a99d4acae8bf7b73e81bfdeaac0922

PACKAGE https://github.com/symfony/symfony

WEB https://symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcache

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🛡️ CVE-2018-14774 — symfony

Description

How this vulnerability can be exploited

Weakness class

Affected software

Timeline and source

References

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