What’s Vulnerable › Vulnerabilities

CVE-2020-5220: Ability to expose data in Sylius by using an unintended serialisation group

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-01-27 · updated 2026-06-17
• Weakness: CWE-444

Description

Sylius ResourceBundle accepts and uses any serialisation groups to be passed via a HTTP header. This might lead to data exposure by using an unintended serialisation group - for example it could make Shop API use a more permissive group from Admin API. Anyone exposing an API with ResourceBundle's controller is affected. The vulnerable versions are: <1.3 || >=1.3.0 <=1.3.12 || >=1.4.0 <=1.4.5 || >=1.5.0 <=1.5.0 || >=1.6.0 <=1.6.2. The patch is provided for Sylius ResourceBundle 1.3.13, 1.4.6, 1.5.1 and 1.6.3, but not for any versions below 1.3.

Affected products

• SyliusResourceBundle: from 1.3.0 through 1.3.12; from 1.4.0 through 1.4.5; from 1.6.0 through 1.6.2; 1.5.0

References

• https://github.com/FriendsOfPHP/security-advisories/blob/master/sylius/resource-bundle/CVE-2020-5220.yaml
• https://github.com/Sylius/SyliusResourceBundle/security/advisories/GHSA-8vp7-j5cj-vvm2
• https://github.com/FriendsOfPHP/security-advisories/blob/master/sylius/resource-bundle/CVE-2020-5220.yaml
• https://github.com/Sylius/SyliusResourceBundle/security/advisories/GHSA-8vp7-j5cj-vvm2

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