CVE-2026-107276

Published: Ott 07, 2026 Last Modified: Ott 07, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,3
Source: 5a6e4751-2f3f-4070-9419-94fb35b644e8
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

MISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request's deletion takes effect.

Preconditions:

- The target MISP instance has email OTP login enabled.

- The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering).

- The attacker can issue two HTTP POST requests in close temporal proximity.

Impact:

- The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions.

- This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted.

Affected versions: <2.5.48

362

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

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Confidentiality Integrity Access Control
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other) Dos: Crash, Exit, Or Restart Dos: Instability Read Files Or Directories Read Application Data Execute Unauthorized Code Or Commands Gain Privileges Or Assume Identity Bypass Protection Mechanism
Applicable Platforms
Languages: C, C++, Java
Technologies: Mobile, ICS/OT
Likelihood of Exploit: Medium
View CWE Details
367

Time-of-check Time-of-use (TOCTOU) Race Condition

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Other Non-Repudiation
Potential Impacts:
Alter Execution Logic Unexpected State Modify Application Data Modify Files Or Directories Modify Memory Other Hide Activities
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Medium
View CWE Details
https://github.com/MISP/MISP/commit/ba95e67d5
https://github.com/MISP/MISP/commit/ba95e67d5