4.3

CVE-2020-5255: sensiolabs symfony

CVSS: 4.3v3.1MediumModified
AliasesDEBIAN-CVE-2020-5255
Published 30-03-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-5255 is a medium (CVSS 4.3) vulnerability in sensiolabs symfony. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 69.9% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-03-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.30%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.30% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • symfony< 4.4.8-1
Sensiolabs1 product
  • symfony≥ 4.4.0, < 4.4.7 | ≥ 5.0.0, < 5.0.7
Symfony1 product
  • symfony≥ 4.4.0 and < 4.4.7 (No fix recorded) | ≥ 5.0.0 and < 5.0.7 (No fix recorded)

3 vendors · 3 products

References

5 links