VULNERABILITY INTELLIGENCE
CVE-2020-5255
CVSS score2.6 LOW
EPSS probability1.30%
CISA KEVNot currently listed
Published2020-03-30
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
Description
In Symfony before versions 4.4.7 and 5.0.7, when a `Response` does not contain a `Content-Type` header, affected versions of Symfony can fallback to the format defined in the `Accept` header of the request, leading to a possible mismatch between the response's content and `Content-Type` header. When the response is cached, this can prevent the use of the website by other users. This has been patched in versions 4.4.7 and 5.0.7.
Weakness classification
- CWE-20: Improper Input Validation
- CWE-435: Improper Interaction Between Multiple Correctly-Behaving Entities
Primary references
- security-advisories@github.com — Patch, Third Party Advisory
- security-advisories@github.com — Third Party Advisory
- security-advisories@github.com
- security-advisories@github.com — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory