CVE-2026-116215

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.

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