CVE-2018-14773: Symfony HTTP Foundation web cache poisoning

medium Affects symfony/http-foundation, symfony/symfony. Feed 2026.10.29.1, updated 2026-10-28; published 2022-05-13; advisory modified 2024-02-16.

Symfony HTTP Foundation web cache poisoning

Package: symfony/http-foundation Composer
Affected versions: >=2.7.0 and <2.7.49 or >=2.8.0 and <2.8.44 or >=3.0.0 and <3.3.18 or >=3.4.0 and <3.4.14 or >=4.0.0 and <4.0.14 or >=4.1.0 and <4.1.3 or >=2.0.0 and <2.1.0 or >=2.1.0 and <2.2.0 or >=2.2.0 and <2.3.0 or >=2.3.0 and <2.4.0 or >=2.4.0 and <2.5.0 or >=2.5.0 and <2.6.0 or >=2.6.0 and <2.7.0 or >=3.0.0 and <3.1.0 or >=3.1.0 and <3.2.0 or >=3.2.0 and <3.3.0 or >=3.3.0 and <3.3.18
Fixed in: 2.7.49, 2.8.44, 3.3.18, 3.4.14, 4.0.14, 4.1.3
Severity: medium CVSS 6.5
Exploitation: not on CISA KEV · EPSS 58% (99.1th percentile)
Published: 2022-05-13
Source: osv.dev

References

Symfony HTTP Foundation web cache poisoning

Package: symfony/symfony Composer
Affected versions: >=2.7.0 and <2.7.49 or >=2.8.0 and <2.8.44 or >=3.0.0 and <3.3.18 or >=3.4.0 and <3.4.14 or >=4.0.0 and <4.0.14 or >=4.1.0 and <4.1.3 or >=2.0.0 and <2.1.0 or >=2.1.0 and <2.2.0 or >=2.2.0 and <2.3.0 or >=2.3.0 and <2.4.0 or >=2.4.0 and <2.5.0 or >=2.5.0 and <2.6.0 or >=2.6.0 and <2.7.0 or >=3.0.0 and <3.1.0 or >=3.1.0 and <3.2.0 or >=3.2.0 and <3.3.0 or >=3.3.0 and <3.3.18
Fixed in: 2.7.49, 2.8.44, 3.3.18, 3.4.14, 4.0.14, 4.1.3
Severity: medium CVSS 6.5
Exploitation: not on CISA KEV · EPSS 58% (99.1th percentile)
Published: 2022-05-13
Source: osv.dev

References

CWE-349

NVD record symfony/http-foundation advisories symfony/symfony advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2013-4752 medium Symfony Host Header Injection vulnerability in the HttpFoundation component same package: symfony/http-foundation
CVE-2019-18888 high Argument injection in a MimeTypeGuesser in Symfony same package: symfony/http-foundation
CVE-2012-6431 medium Symfony Allows URI Restrictions Bypass Via Double-Encoded String same package: symfony/http-foundation
CVE-2019-10913 critical Invalid HTTP method overrides allow possible XSS or other attacks in Symfony same package: symfony/http-foundation
CVE-2018-11386 medium Symfony DoS same package: symfony/http-foundation
CVE-2025-64500 high Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass same package: symfony/http-foundation