Moderate severityNVD Advisory· Published Jun 2, 2015· Updated Jun 17, 2026
CVE-2015-4050
CVE-2015-4050
Description
FragmentListener in the HttpKernel component in Symfony 2.3.19 through 2.3.28, 2.4.9 through 2.4.10, 2.5.4 through 2.5.11, and 2.6.0 through 2.6.7, when ESI or SSI support enabled, does not check if the _controller attribute is set, which allows remote attackers to bypass URL signing and security rules by including (1) no hash or (2) an invalid hash in a request to /_fragment.
AI Insight
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/http-kernelPackagist | >= 2.3.19, < 2.3.29 | 2.3.29 |
symfony/http-kernelPackagist | >= 2.5.4, < 2.5.12 | 2.5.12 |
symfony/http-kernelPackagist | >= 2.6.0, < 2.6.8 | 2.6.8 |
symfony/symfonyPackagist | >= 2.3.19, < 2.3.29 | 2.3.29 |
symfony/symfonyPackagist | >= 2.4.9, <= 2.4.10 | — |
symfony/symfonyPackagist | >= 2.5.4, < 2.5.12 | 2.5.12 |
symfony/symfonyPackagist | >= 2.6.0, < 2.6.8 | 2.6.8 |
symfony/http-kernelPackagist | >= 2.4.9, <= 2.4.10 | — |
Affected products
29cpe:2.3:a:sensiolabs:symfony:2.3.19:*:*:*:*:*:*:*+ 26 more
- cpe:2.3:a:sensiolabs:symfony:2.3.19:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.20:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.21:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.22:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.23:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.24:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.25:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.26:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.27:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.3.28:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.4.10:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.4.9:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.10:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.11:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.4:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.5:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.6:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.7:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.8:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.5.9:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.6.3:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.6.4:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.6.5:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.6.6:*:*:*:*:*:*:*
- cpe:2.3:a:sensiolabs:symfony:2.6.7:*:*:*:*:*:*:*
- ghsa-coords2 versions
>= 2.3.19, < 2.3.29+ 1 more
- (no CPE)range: >= 2.3.19, < 2.3.29
- (no CPE)range: >= 2.3.19, < 2.3.29
Patches
Vulnerability mechanics
References
12- symfony.com/blog/cve-2015-4050-esi-unauthorized-accessnvdVendor AdvisoryWEB
- github.com/advisories/GHSA-qmqw-mpqp-mr54ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2015-4050ghsaADVISORY
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159513.htmlnvdWEB
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159603.htmlnvdWEB
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159610.htmlnvdWEB
- www.debian.org/security/2015/dsa-3276nvdWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-kernel/CVE-2015-4050.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2015-4050.yamlghsaWEB
- symfony.com/cve-2015-4050ghsaWEB
- web.archive.org/web/20200228090443/http://www.securityfocus.com/bid/74928ghsaWEB
- www.securityfocus.com/bid/74928nvd
News mentions
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