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CVE-2020-5274

20
FAUCET Score

CVE-2020-5274 is a medium-severity vulnerability affecting Symfony versions prior to 4.4.5 and 5.0.5. It involves improper escaping of exception properties and the display of stack traces in non-debug configurations within the ErrorHandler component. This could lead to information disclosure (CWE-209) with a CVSS score of 5.4. While the attack complexity is low, the impact is limited to low confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.4.0, < 4.4.4CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 5.0.0, < 5.0.4CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.6MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.20%
Probability of exploitation in next 30 days
EPSS Percentile
64.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 79th percentile among its peer group of 21,977 CVEs.

Social Chatter

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.

Media 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.

Remediation

Patch Available

Vendor Patches (5)

composerpatch availablevia ghsa
Product: symfony/error-handlerFixed in: 4.4.4
composerpatch availablevia ghsa
Product: symfony/error-handlerFixed in: 5.0.4
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 4.4.4
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 5.0.4
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-m884-279h-32v2medium

Exceptions displayed in non-debug configurations in Symfony

Mar 30, 2020

References

github.com / symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db
PatchThird Party Advisory
github.com / symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad
PatchThird Party Advisory
github.com / symfony/symfony/security/advisories/GHSA-m884-279h-32v2
Third Party Advisory