Read the docs
TI-2026-24377 Aliases CVE-2026-31824GHSA-7mp4-25j8-hp5q

Sylius has a Promotion Usage Limit Bypass via Race Condition

Priority MEDIUM 41CWE-362Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00206 10th percentileScored 2026-11-07
Fix Fixed Sylius (Sylius): 2.2.3, 2.1.12, 2.0.16 +6sylius/sylius (Packagist): 1.9.12, 1.10.16, 1.11.17 +6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SyliusSylius2.2.0 to before 2.2.3; 2.1.0 to before 2.1.12; 2.0.0 to before 2.0.16; 1.14.0 to before 1.14.18; 1.13.0 to before 1.13.15; 1.12.0 to before 1.12.23; 1.11.0 to before 1.11.17; 1.10.0 to before 1.10.16; before 1.9.122.2.3, 2.1.12, 2.0.16, 1.14.18, 1.13.15, 1.12.23, 1.11.17, 1.10.16, 1.9.12Patch availableCNA
—sylius/sylius (Packagist)before 1.9.121.9.12Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)1.10.0 to before 1.10.161.10.16Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)1.11.0 to before 1.11.171.11.17Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)1.12.0 to before 1.12.231.12.23Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)1.13.0 to before 1.13.151.13.15Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)1.14.0 to before 1.14.181.14.18Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)2.0.0 to before 2.0.162.0.16Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)2.1.0 to before 2.1.122.1.12Patch availableGHSA-7mp4-25j8-hp5q
—sylius/sylius (Packagist)2.2.0 to before 2.2.32.2.3Patch availableGHSA-7mp4-25j8-hp5q
  • Sylius VendorSylius Affected 2.2.0 to before 2.2.3; 2.1.0 to before 2.1.12; 2.0.0 to before 2.0.16; 1.14.0 to before 1.14.18; 1.13.0 to before 1.13.15; 1.12.0 to before 1.12.23; 1.11.0 to before 1.11.17; 1.10.0 to before 1.10.16; before 1.9.12 Fixed in 2.2.3, 2.1.12, 2.0.16, 1.14.18, 1.13.15, 1.12.23, 1.11.17, 1.10.16, 1.9.12 Patch available CNA
  • sylius/sylius (Packagist) Vendor— Affected before 1.9.12 Fixed in 1.9.12 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 1.10.0 to before 1.10.16 Fixed in 1.10.16 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 1.11.0 to before 1.11.17 Fixed in 1.11.17 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 1.12.0 to before 1.12.23 Fixed in 1.12.23 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 1.13.0 to before 1.13.15 Fixed in 1.13.15 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 1.14.0 to before 1.14.18 Fixed in 1.14.18 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 2.0.0 to before 2.0.16 Fixed in 2.0.16 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 2.1.0 to before 2.1.12 Fixed in 2.1.12 Patch available GHSA-7mp4-25j8-hp5q
  • sylius/sylius (Packagist) Vendor— Affected 2.2.0 to before 2.2.3 Fixed in 2.2.3 Patch available GHSA-7mp4-25j8-hp5q

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:sylius:sylius:*:*:*:*:*:*:*:*before 1.9.12; 1.10.0 to before 1.10.16; 1.11.0 to before 1.11.17; 1.12.0 to before 1.12.23; 1.13.0 to before 1.13.15; 1.14.0 to before 1.14.18; 2.0.0 to before 2.0.16; 2.1.0 to before 2.1.12; 2.2.0 to before 2.2.3VulnerableSylius
  • cpe:2.3:a:sylius:sylius:*:*:*:*:*:*:*:* Versions before 1.9.12; 1.10.0 to before 1.10.16; 1.11.0 to before 1.11.17; 1.12.0 to before 1.12.23; 1.13.0 to before 1.13.15; 1.14.0 to before 1.14.18; 2.0.0 to before 2.0.16; 2.1.0 to before 2.1.12; 2.2.0 to before 2.2.3 Vulnerable ·Sylius

Remediation

  • Fix · CNA Sylius (Sylius) Fixed in 2.2.3, 2.1.12, 2.0.16, 1.14.18, 1.13.15, 1.12.23, 1.11.17, 1.10.16, 1.9.12
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 1.9.12 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 1.10.16 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 1.11.17 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 1.12.23 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 1.13.15 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 1.14.18 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 2.0.16 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 2.1.12 Advisory →
  • Fix · GHSA-7mp4-25j8-hp5q sylius/sylius (Packagist) Fixed in 2.2.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-31824
  2. 2026-10-03 Alias added: GHSA-7mp4-25j8-hp5q

References

Advisory 2

Other 1

  • TI-2026-24374 Sylius is Missing Authorization in API v2 Add Item Endpoint CVSS 4.0MEDIUM 6.9
  • TI-2022-08557 Insufficient Session Expiration in Sylius CVSS 3.1HIGH 8.2
  • TI-2026-24378 Sylius has a DQL Injection via API Order Filters CVSS 3.1MEDIUM 5.3
  • TI-2024-19437 Sylius 1.12.13 is vulnerable to Cross Site Scripting (XSS) via the "Province" field in Address Book. CVSS 3.1MEDIUM 6.4
  • TI-2022-08563 Basic Cross-site Scripting and Unrestricted Upload of File with Dangerous Type in Sylius CVSS 3.1MEDIUM 6.1
  • TI-2024-37963 A rate limiting issue in Sylius v2.0.2 allows a remote attacker to perform unrestricted… CVSS 3.1HIGH 7.5
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences