High severity7.2NVD Advisory· Published Aug 3, 2018· Updated Jun 17, 2026
CVE-2018-14774
CVE-2018-14774
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
symfony/symfonyPackagist | >= 2.7.0, < 2.7.49 | 2.7.49 |
symfony/symfonyPackagist | >= 2.8.0, < 2.8.44 | 2.8.44 |
symfony/symfonyPackagist | >= 3.3.0, < 3.3.18 | 3.3.18 |
symfony/symfonyPackagist | >= 3.4.0, < 3.4.14 | 3.4.14 |
symfony/symfonyPackagist | >= 4.0.0, < 4.0.14 | 4.0.14 |
symfony/symfonyPackagist | >= 4.1.0, < 4.1.3 | 4.1.3 |
Affected products
2Patches
Vulnerability mechanics
References
9- github.com/symfony/symfony/commit/725dee4cd8b4ccd52e335ae4b4522242cea9bd4anvdIssue TrackingPatchThird Party AdvisoryWEB
- symfony.com/blog/cve-2018-14774-possible-host-header-injection-when-using-httpcachenvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-66p6-7p29-55p9ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2018-14774ghsaADVISORY
- github.com/symfony/symfony/commit/7f912bbb78377c2ea331b3da28363435fbd91337ghsaWEB
- github.com/symfony/symfony/commit/96504fb8c9f91204727d2930eb837473ce154956ghsaWEB
- github.com/symfony/symfony/commit/974240e178bb01d734bf1df1ad5c3beba6a2f982ghsaWEB
- github.com/symfony/symfony/commit/9cfcaba0bf71f87683510b5f47ebaac5f5d6a5baghsaWEB
- github.com/symfony/symfony/commit/bcf5897bb1a99d4acae8bf7b73e81bfdeaac0922ghsaWEB
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