VulnerableCode Package Details - pkg:composer/symfony/http-kernel@4.3.8

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Vulnerability	Summary	Fixed by
VCID-7gzy-b9hc-zuh2 Aliases: CVE-2021-21424 GHSA-5pv8-ppvj-4h68	Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.	4.4.23 Affected by 0 other vulnerabilities. 5.2.8 Affected by 1 other vulnerability. This version is affected by these other vulnerabilities: {{ fixed_by_vuln.vulnerability_id }}

Vulnerability

Summary

Fixed by

VCID-7gzy-b9hc-zuh2
Aliases:
CVE-2021-21424
GHSA-5pv8-ppvj-4h68

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.

4.4.23
Affected by 0 other vulnerabilities.

5.2.8
Affected by 1 other vulnerability.

Vulnerability	Summary	Aliases
VCID-s3ep-tgah-aud1	Symfony Http-Kernel has non-constant time comparison in UriSigner When checking the signature of an URI (an ESI fragment URL for instance), the URISigner did not used a constant time string comparison function, resulting in a potential remote timing attack vulnerability.	CVE-2019-18887 GHSA-q8hg-pf8v-cxrv

Vulnerability

Summary

Aliases

VCID-s3ep-tgah-aud1

Symfony Http-Kernel has non-constant time comparison in UriSigner When checking the signature of an URI (an ESI fragment URL for instance), the URISigner did not used a constant time string comparison function, resulting in a potential remote timing attack vulnerability.

CVE-2019-18887
GHSA-q8hg-pf8v-cxrv

Date	Actor	Action	Vulnerability	Source	VulnerableCode Version
2025-07-03T17:59:27.935938+00:00	GitLab Importer	Affected by	VCID-7gzy-b9hc-zuh2	https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-kernel/CVE-2021-21424.yml	37.0.0
2025-07-03T17:37:31.333503+00:00	GitLab Importer	Fixing	VCID-s3ep-tgah-aud1	https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-kernel/CVE-2019-18887.yml	37.0.0
2025-07-03T13:54:53.997116+00:00	GitLab Importer	Fixing	VCID-s3ep-tgah-aud1	https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-kernel/CVE-2019-18887.yml	36.1.3
2025-07-01T14:31:32.541178+00:00	GHSA Importer	Fixing	VCID-s3ep-tgah-aud1	https://github.com/advisories/GHSA-q8hg-pf8v-cxrv	36.1.3
2025-07-01T12:24:49.797570+00:00	GithubOSV Importer	Fixing	VCID-s3ep-tgah-aud1	https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/03/GHSA-q8hg-pf8v-cxrv/GHSA-q8hg-pf8v-cxrv.json	36.1.3