CVE-2020-5255 affects Symfony versions prior to 4.4.7 and 5.0.7. The vulnerability arises when a Response lacks a Content-Type header, causing Symfony to default to the Accept header's format, potentially creating a mismatch between content and header. This can lead to caching issues that disrupt website access for other users. Rated as Medium severity (CVSS 4.3), the vulnerability has a low attack complexity and requires low privileges, with a potential impact of denial of service (availability). There is no confidentiality or integrity impact. Currently, there is no evidence of active exploitation, nor is exploit code publicly available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.4.0, < 4.4.7CPE matchmatch criteria | cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* | ||
>= 5.0.0, < 5.0.7CPE matchmatch criteria | cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.