8.1

CVE-2020-5275: sensiolabs symfony Improper Authorization

CVSS: 8.1v3.1HighModified
AliasesDEBIAN-CVE-2020-5275
Published 30-03-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-5275 is a high (CVSS 8.1) Improper Authorization vulnerability in sensiolabs symfony. EPSS estimates a 1.15% chance of exploitation in the next 30 days, higher than 66.3% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
1.15%
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/security-http before versions 4.4.7 and 5.0.7, when a `Firewall` checks access control rule, it iterate overs each rule's attributes and stops as soon as the accessDecisionManager decides to grant access on the attribute, preventing the check of next attributes that should have been take into account in an unanimous strategy. The accessDecisionManager is now called with all attributes at once, allowing the unanimous strategy being applied on each attribute. This issue is patched in versions 4.4.7 and 5.0.7.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.15%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.15% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.15%

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, < 4.4.7 | ≥ 5.0.0, < 5.0.7

3 vendors · 3 products

References

4 links