Description
MacCMS v10 through 2026.1000.4056 contains a race condition vulnerability in Card::useData() that allows authenticated members to redeem one recharge card multiple times via the user/buy endpoint. Attackers can send many concurrent flag=card requests that pass the non-locking card read before it is marked used, inflating user_points to buy VIP upgrades and paid content.
Metrics
CVSS 3.1 3.1/10
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| maccmspro | maccms10 | <= 2021.1000.2000 |
| magicblack | maccms10 | <= 2026.1000.4056 |
References
- https://github.com/maccmspro/maccms10
- https://github.com/maccmspro/maccms10/blob/7f388ee0008faf5b01e5df7bf5e5a6ff4bbe13e8/application/common/model/Card.php#L123-L160
- https://github.com/maccmspro/maccms10/issues/30
- https://www.vulncheck.com/advisories/maccms-v10-through-2026.1000.4056-race-condition-via-card-redemption
Timeline
- Published
- Oct 26, 2026
- Last modified
- Oct 31, 2026
- NVD status
- Deferred