CVE-2026-116215: MacCMS v10 through 2026.1000.4056 Race Condition via Card Redemption

Severity: low (CVSS 3.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-26 · updated 2026-10-31
Weakness: CWE-362

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.

Affected products

magicblack MacCMS10: through 2026.1000.4056
maccmspro maccms10: through 2021.1000.2000

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

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