CVE-2026-116215 PUBLISHED

MacCMS v10 through 2026.1000.4056 Race Condition via Card Redemption

Assigner: VulnCheck
Reserved: 25.10.2026 Published: 26.10.2026 Updated: 26.10.2026

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.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 2.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 3.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	maccmspro
Product	maccms10
Versions	Default: unaffected affected from 0 to 2021.1000.2000 (incl.)

Vendor	magicblack
Product	maccms10
Versions	Default: unaffected affected from 0 to 2026.1000.4056 (incl.)

Credits

Abu Raihan Biswas finder

References

Problem Types

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE