PT-2026-103734

CVE-2026-103655

Published

2026-10-01

Updated

2026-10-05

Description by

CVSS 4.0

9.3

Critical

MetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions MISP versions prior to 2.5.48

Description A flaw in the two-factor authentication (TOTP) verification process allows a valid one-time code to be accepted multiple times within its time-based validity window, typically 30 seconds. This occurs because the system fails to record if a specific TOTP period has already been consumed. An attacker who intercepts a legitimate code during a user login can replay it to establish an unauthorized second session as that user, potentially compromising administrative functions and threat-intelligence data.

Recommendations Update to version 2.5.48 or later.

Exploitability

Exploit

Fix

Researchers

Iglocska

Tanguy Snoeck

Vendors

Affected products

Weakness enumeration

CWE-294: Authentication Bypass by Capture-replay

Related identifiers