Vulnerability in Symfony
CVE-2020-5255
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 b…
EPSS: 0.004 (59.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L.
Affected products
- Symfony — versions >= 4.4.0 and < 4.4.7, >= 5.0.0 and < 5.0.7
Weakness classification (CWE)
References
- github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859 (x_refsource_CONFIRM)
- github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6 (x_refsource_MISC)
- symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-t… (x_refsource_MISC)
- FEDORA-2020-fade6a8df7 (vendor-advisory, x_refsource_FEDORA)
Frequently asked questions
- What is CVE-2020-5255?
- CVE-2020-5255 is a low-severity vulnerability in Symfony, classified under CWE-435. CVSS score: 2.6/10. Published 2020-03-30.
- How severe is CVE-2020-5255?
- Low severity. CVSS v3 base score is 2.6 out of 10.