CVE-2026-121628
Bagisto before 2.3.16 and 2.4.x before 2.4.1 Race Condition in Coupon Usage Accounting
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| bagisto bagisto bagisto/bagisto
composer |
≥ 0; < 2.3.16 (affected, semver) ≥ 2.4.0; < 2.4.1 (affected, semver) 2.3.16 (unaffected, semver) 2.4.1 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.3 medium |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 3.7 low |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N | CNA: VulnCheck |
| 4.0 / 6.3 medium |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 3.7 low |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N | NVD: [email protected] |
Exploit evidence
- https://gist.github.com/Ayxpp/5358d9fff045e94e0ddb51677ed5d195
exploit · CNA: VulnCheck
References
- https://github.com/bagisto/bagisto/commit/81cb2a2a35b355492f704fd216d679f2145a5650CNA: VulnCheck · patch
- https://github.com/bagisto/bagisto/commit/1f57c10eb9cb61b37de4706ffa439fd26aa7c405CNA: VulnCheck · patch
- https://github.com/bagisto/bagisto/releases/tag/v2.3.16CNA: VulnCheck · release-notes
- https://github.com/bagisto/bagisto/releases/tag/v2.4.1CNA: VulnCheck · release-notes
- https://gist.github.com/Ayxpp/5358d9fff045e94e0ddb51677ed5d195CNA: VulnCheck · exploit
- https://github.com/bagisto/bagisto/blob/v2.4.0/packages/Webkul/CartRule/src/Listeners/Order.php#L30-L95CNA: VulnCheck · technical-description
- https://github.com/bagisto/bagistoCNA: VulnCheck · product
- https://www.vulncheck.com/advisories/bagisto-before-2.3.16-and-2.4-x-before-2.4.1-race-condition-in-coupon-usage-accountingCNA: VulnCheck · third-party-advisory
- https://gist.github.com/Ayxpp/5358d9fff045e94e0ddb51677ed5d195[email protected]
- https://github.com/bagisto/bagisto[email protected]
- https://github.com/bagisto/bagisto/blob/v2.4.0/packages/Webkul/CartRule/src/Listeners/Order.php#L30-L95[email protected]
- https://github.com/bagisto/bagisto/commit/1f57c10eb9cb61b37de4706ffa439fd26aa7c405[email protected]
- https://github.com/bagisto/bagisto/commit/81cb2a2a35b355492f704fd216d679f2145a5650[email protected]
- https://github.com/bagisto/bagisto/releases/tag/v2.3.16[email protected]
- https://github.com/bagisto/bagisto/releases/tag/v2.4.1[email protected]
- https://www.vulncheck.com/advisories/bagisto-before-2.3.16-and-2.4-x-before-2.4.1-race-condition-in-coupon-usage-accounting[email protected]
For agents and automation
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