CVE-2020-5274
Published:March 30, 2020
Updated:May 16, 2026
In Symfony before versions 5.0.5 and 4.4.5, some properties of the Exception were not properly escaped when the `ErrorHandler` rendered it stacktrace. In addition, the stacktrace were displayed even in a non-debug configuration. The ErrorHandler now escape alls properties of the exception, and the stacktrace is only display in debug configuration. This issue is patched in symfony/http-foundation versions 4.4.5 and 5.0.5
Affected Packages
symfony/error-handler (PHP):
Affected version(s) >=v4.4.0 <v4.4.4Fix Suggestion:
Update to version v4.4.4symfony/error-handler (PHP):
Affected version(s) >=v5.0.0 <v5.0.4Fix Suggestion:
Update to version v5.0.4symfony/symfony (PHP):
Affected version(s) >=v4.4.0 <v4.4.4Fix Suggestion:
Update to version v4.4.4symfony/symfony (PHP):
Affected version(s) >=v5.0.0 <v5.0.4Fix Suggestion:
Update to version v5.0.4Related Resources (7)
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Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Generation of Error Message Containing Sensitive Information
EPSS
Base Score:
0.27