Sylius is an Open Source eCommerce Framework on Symfony. A Time-of-Check To Time-of-Use (TOCTOU) race condition was discovered in the promotion usage limit enforcement. The same class of vulnerability affects the promotion usage limit (the global used counter on Promotion entities), coupon usage limit (the global used counter on PromotionCoupon entities), and coupon per-customer usage limit (the per-customer redemption count on PromotionCoupon entities). In all three cases, the eligibility check reads the used counter (or order count) from an in-memory Doctrine entity during validation, while the actual usage increment in OrderPromotionsUsageModifier happens later during order completion — with no database-level locking or atomic operations between the two phases. Because Doctrine flushes an absolute value (SET used = 1) rather than an atomic increment (SET used = used + 1), and because the affected entities lack optimistic locking, concurrent requests all read the same stale usage counts and pass the eligibility checks simultaneously. An attacker can exploit this by preparing multiple carts with the same limited-use promotion or coupon and firing simultaneous PATCH /api/v2/shop/orders/{token}/complete requests. All requests pass the usage limit checks and complete successfully, allowing a single-use promotion or coupon to be redeemed an arbitrary number of times. The per-customer limit can be bypassed in the same way by a single customer completing multiple orders concurrently. No authentication is required to exploit this vulnerability. This may lead to direct financial loss through unlimited redemption of limited-use promotions and discount coupons. 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.
CVSS Score
8.2
EPSS Score
0.001
Published
2026-03-10
Sylius is an Open Source eCommerce Framework on Symfony. Sylius API filters ProductPriceOrderFilter and TranslationOrderNameAndLocaleFilter pass user-supplied order direction values directly to Doctrine's orderBy() without validation. An attacker can inject arbitrary DQL. 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.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-03-10
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.
CVSS Score
6.1
EPSS Score
0.0
Published
2026-03-10
sylius/sylius versions prior to 1.9.10, 1.10.11, and 1.11.2 are vulnerable to stored cross-site scripting (XSS) through SVG files. This vulnerability allows attackers to inject malicious scripts that can be executed in the context of the user's browser.
CVSS Score
4.1
EPSS Score
0.001
Published
2024-11-15
Sylius is an open source eCommerce platform. In versions prior to 1.9.10, 1.10.11, and 1.11.2, it is possible to upload an SVG file containing cross-site scripting (XSS) code in the admin panel. In order to perform a XSS attack, the file itself has to be open in a new card or loaded outside of the IMG tag. The problem applies both to the files opened on the admin panel and shop pages. The issue is fixed in versions 1.9.10, 1.10.11, and 1.11.2. As a workaround, require a library that adds on-upload file sanitization and overwrite the service before writing the file to the filesystem. The GitHub Security Advisory contains more specific information about the workaround.
CVSS Score
6.1
EPSS Score
0.003
Published
2022-03-14
Sylius is an open source eCommerce platform. Prior to versions 1.9.10, 1.10.11, and 1.11.2, any other user can view the data if browser tab remains unclosed after log out. The issue is fixed in versions 1.9.10, 1.10.11, and 1.11.2. A workaround is available. The application must strictly redirect to login page even browser back button is pressed. Another possibility is to set more strict cache policies for restricted content.
CVSS Score
5.0
EPSS Score
0.004
Published
2022-03-14
Sylius is an open source eCommerce platform. Prior to versions 1.9.10, 1.10.11, and 1.11.2, it is possible for a page controlled by an attacker to load the website within an iframe. This will enable a clickjacking attack, in which the attacker's page overlays the target application's interface with a different interface provided by the attacker. The issue is fixed in versions 1.9.10, 1.10.11, and 1.11.2. A workaround is available. Every response from app should have an X-Frame-Options header set to: ``sameorigin``. To achieve that, add a new `subscriber` in the app.
CVSS Score
6.1
EPSS Score
0.003
Published
2022-03-14
In Sylius before versions 1.6.9, 1.7.9 and 1.8.3, the user may register in a shop by email mail@example.com, verify it, change it to the mail another@domain.com and stay verified and enabled. This may lead to having accounts addressed to totally different emails, that were verified. Note, that this way one is not able to take over any existing account (guest or normal one). The issue has been patched in Sylius 1.6.9, 1.7.9 and 1.8.3. As a workaround, you may resolve this issue on your own by creating a custom event listener, which will listen to the sylius.customer.pre_update event. You can determine that email has been changed if customer email and user username are different. They are synchronized later on. Pay attention, to email changing behavior for administrators. You may need to skip this logic for them. In order to achieve this, you should either check master request path info, if it does not contain /admin prefix or adjust event triggered during customer update in the shop. You can find more information on how to customize the event here.
CVSS Score
4.3
EPSS Score
0.002
Published
2020-10-19
In affected versions of Sylius, exception messages from internal exceptions (like database exception) are wrapped by \Symfony\Component\Security\Core\Exception\AuthenticationServiceException and propagated through the system to UI. Therefore, some internal system information may leak and be visible to the customer. A validation message with the exception details will be presented to the user when one will try to log into the shop. This has been patched in versions 1.3.14, 1.4.10, 1.5.7, and 1.6.3.
CVSS Score
3.5
EPSS Score
0.003
Published
2019-12-05