CVE-2026-31819

Sylius has an Open Redirect via Referer Header

MEDIUM

6.1

CVSS Score

Published: March 10, 2026 at 09:18 PM UTC

Updated: June 17, 2026 at 10:34 AM UTC

1 product affected across 1 vendorSylius

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Severity

MEDIUM6.1

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

Sylius is an Open Source eCommerce Framework on Symfony. CurrencySwitchController::switchAction(), ImpersonateUserController::impersonateAction() and StorageBasedLocaleSwitcher::handle() use the HTTP Referer header directly when redirecting. The attack requires the victim to click a legitimate application link placed on an attacker-controlled page. The browser automatically sends the attacker's site as the Referer, and the application redirects back to it. This can be used for phishing or credential theft, as the redirect originates from a trusted domain. The severity varies by endpoint; public endpoints require no authentication and are trivially exploitable, while admin-only endpoints require an authenticated session but remain vulnerable if an admin follows a link from an external source such as email or chat. The issue is fixed in versions: 1.9.12, 1.10.16, 1.11.17, 1.12.23, 1.13.15, 1.14.18, 2.0.16, 2.1.12, 2.2.3 and above.

Affected

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

Sylius · Syliuscomposer

95%

v < 1.10.16v < 1.11.17v < 1.12.23v < 1.13.15v < 1.14.18v < 1.9.12v < 2.0.16v < 2.1.12v < 2.2.31.10.0 ≤ v < 1.10.161.11.0 ≤ v < 1.11.171.12.0 ≤ v < 1.12.231.13.0 ≤ v < 1.13.151.14.0 ≤ v < 1.14.182.0.0 ≤ v < 2.0.162.1.0 ≤ v < 2.1.122.2.0 ≤ v < 2.2.3

Affected range stops below 1.10.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.11.17, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.12.23, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.13.15, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.14.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.9.12, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.0.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.1.12, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.2.3, 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

https://github.com/Sylius/Sylius/security/advisories/GHSA-9ffx-f77r-756w

References (1)

x_refsource_CONFIRMMitigationVendor Advisory

Source: cverecord

https://github.com/Sylius/Sylius/security/advisories/GHSA-9ffx-f77r-756w

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUM[email protected]

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

Vector?

Quick Info

StatusANALYZED

CWE

CWE-601

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