CVE-2020-15094
HIGH8.0EPSS 2.2%RCE in Symfony
Published: 9/2/2020Modified: 5/27/2026
Description
In Symfony before versions 4.4.13 and 5.1.5, the CachingHttpClient class from the HttpClient Symfony component relies on the HttpCache class to handle requests. HttpCache uses internal headers like X-Body-Eval and X-Body-File to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by CachingHttpClient and if an attacker can control the response for a request being made by the CachingHttpClient, remote code execution is possible. This has been fixed in versions 4.4.13 and 5.1.5.
Affected packages (4)
- Bitnami/symfony>= 4.4.0, < 4.4.13, >= 5.1.0, < 5.1.5
- Debian/symfonyfrom 0, < 4.4.13+dfsg-1
- Packagist/symfony/http-kernel>= 4.3.0, < 4.4.13
- Packagist/symfony/symfony>= 4.3.0, < 4.4.13
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.0 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H |
References (14)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-15094
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-15094
- PATCHhttps://github.com/symfony/symfony
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-kernel/CVE-2020-15094.yaml
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2020-15094.yaml
- WEBhttps://github.com/symfony/symfony/commit/d9910e0b33a2e0f993abff41c6fbc86951b66d78
- WEBhttps://github.com/symfony/symfony/security/advisories/GHSA-754h-5r27-7x3r
- WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HNGUWOEETOFVH4PN3I3YO4QZHQ4AUKF3/
- WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAQJXAKWPMWB7OL6QPG2ZSEQZYYPU5RC/
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/HNGUWOEETOFVH4PN3I3YO4QZHQ4AUKF3
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/VAQJXAKWPMWB7OL6QPG2ZSEQZYYPU5RC
- WEBhttps://packagist.org/packages/symfony/http-kernel
- WEBhttps://packagist.org/packages/symfony/symfony
- WEBhttps://symfony.com/cve-2020-15094