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| purl | pkg:composer/symfony/http-kernel@5.2.2 |
| 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. |
Affected by 1 other vulnerability. |
|
VCID-q9nm-2b34-yked
Aliases: CVE-2021-41267 GHSA-q3j3-w37x-hq2q |
Webcache Poisoning in symfony/http-kernel Description ----------- When a Symfony application is running behind a proxy or a load-balancer, you can tell Symfony to look for the `X-Forwarded-*` HTTP headers. HTTP headers that are not part of the "trusted_headers" allowed list are ignored and protect you from "Cache poisoning" attacks. In Symfony 5.2, we've added support for the `X-Forwarded-Prefix` header, but this header was accessible in sub-requests, even if it was not part of the "trusted_headers" allowed list. An attacker could leverage this opportunity to forge requests containing a `X-Forwarded-Prefix` HTTP header, leading to a web cache poisoning issue. Resolution ---------- Symfony now ensures that the `X-Forwarded-Prefix` HTTP header is not forwarded to sub-requests when it is not trusted. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487) for branch 5.3. Credits ------- We would like to thank Soner Sayakci for reporting the issue and Jérémy Derussé for fixing the issue. |
Affected by 0 other vulnerabilities. Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| This package is not known to fix vulnerabilities. | ||
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2025-07-03T18:07:21.673835+00:00 | GitLab Importer | Affected by | VCID-q9nm-2b34-yked | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-kernel/CVE-2021-41267.yml | 37.0.0 |
| 2025-07-03T17:59:28.089576+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 |