CVE-2020-5274

Exceptions displayed in non-debug configurations in Symfony

MEDIUM

5.4

CVSS Score

Published: March 30, 2020 at 07:40 PM UTC

Updated: June 17, 2026 at 03:21 AM UTC

2 products affected across 2 vendorsSymfonySymfony

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Severity

MEDIUM5.4

Exploit prediction

EPSS 1%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Symfony · Sensiolabsdrupal

95%

4.4.0 ≤ v < 4.4.45.0.0 ≤ v < 5.0.4

Affected range stops below 4.4.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.4, so it looks safe — our inference, not a vendor statement

Symfony · Symfonycomposer

60%

v < 4.4.5v < 5.0.5

Affected range stops below 4.4.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

https://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://github.com/symfony/symfony/security/advisories/GHSA-m884-279h-32v2

CVSS

5.4MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-209

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