CVE-2026-103655
- Source
- https://cve.org/CVERecord?id=CVE-2026-103655
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103655.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-103655
- Published
- 2026-10-01T08:08:55Z
- Modified
- 2026-10-04T02:45:44Z
- Severity
-
- 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- MISP TOTP Code Replay Allows Duplicate Authentication Within Validity Period
- Details
-
MISP contains a vulnerability in its two-factor authentication (TOTP) verification process that permits a valid one-time code to be accepted more than once within its time-based validity window.
The issue exists in the user login flow where a TOTP code is verified as a second authentication factor. Because the system did not record whether a given TOTP period had already been consumed, the same code remained valid for its entire time window (typically 30 seconds). An attacker who captures a legitimate code during a user's login could replay it to authenticate a second session as that user.
Preconditions:
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The target user has TOTP-based two-factor authentication enabled.
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The attacker is in a position to observe or intercept the TOTP code during a legitimate login (e.g., network-level interception, shoulder surfing, or a compromised client).
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The replay must occur within the TOTP validity period.
Security impact:
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Unauthorized account access by replaying a captured one-time code.
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Potential compromise of threat-intelligence data and administrative functions accessible to the targeted user.
Affected versions: <v2.5.48.
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- Database specific
{ "cna_assigner": "CIRCL", "cwe_ids": [ "CWE-294" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103655.json" }- References