CVE-2026-121628

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    CVE-2026-121628

    Published: 3 Nov 2026Last Modified: 5 Nov 2026

    Summary: Bagisto before 2.3.16 and 2.4.x before 2.4.1 Race Condition in Coupon Usage Accounting

    Details: Bagisto before 2.3.16 and 2.4.x before 2.4.1 contains a race condition vulnerability in manageCartRule() that allows attackers to redeem single-use coupons multiple times. Attackers can submit concurrent order requests to the onepage orders checkout endpoint, bypassing unlocked times_used checks to apply discounts repeatedly.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121628.json, https://github.com/bagisto/bagisto/releases/tag/v2.3.16, https://github.com/bagisto/bagisto/releases/tag/v2.4.1, https://nvd.nist.gov/vuln/detail/CVE-2026-121628, https://www.vulncheck.com/advisories/bagisto-before-2.3.16-and-2.4-x-before-2.4.1-race-condition-in-coupon-usage-accounting, https://github.com/bagisto/bagisto/commit/1f57c10eb9cb61b37de4706ffa439fd26aa7c405, https://github.com/bagisto/bagisto/commit/81cb2a2a35b355492f704fd216d679f2145a5650, https://github.com/bagisto/bagisto, https://github.com/bagisto/bagisto/blob/v2.4.0/packages/Webkul/CartRule/src/Listeners/Order.php#L30-L95, https://gist.github.com/Ayxpp/5358d9fff045e94e0ddb51677ed5d195

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -84d4f3537a91ef99bebf05e48b2e9d1ac55e4bd4

    Affected versions

    v2.4.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-121628 | CVE-DB