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Forced TOTP enrolment bypass via non-browser requests in MISP

Priority LOW 31CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

MISP versions before 2.5.48 fail to enforce mandatory TOTP enrolment on instances with Security.otp_required for non-browser requests. An authenticated user who has not enrolled in TOTP can skip the forced setup by sending AJAX, REST API, or .json requests and keep full access to the instance. The flaw is CWE-306, missing authentication for a critical function.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

On MISP instances configured to require TOTP enrolment (Security.otp_required), the enforcement of the mandatory two-factor authentication setup applied only to standard browser requests. An authenticated user who had not yet enrolled in TOTP could bypass the forced setup by issuing any non-browser request type, including AJAX/XHR calls, REST API requests, .json format URLs, restSearch queries, or automation actions. Because these machine-readable request shapes cannot follow the redirect that the browser path uses to send the user to the TOTP enrolment page, the guard simply skipped the check and the user retained full access to the instance without completing the required second-factor setup. The initial fix (commit 8deb0619e) added a guard specifically for AJAX requests. A follow-up fix (commit 6b527ba6e) broadened the guard to cover every non-browser request shape, while preserving the exemption for identities authenticated via API key (logged_by_authkey flag). Impact: an authenticated user on an otp_required instance can operate with full access indefinitely without enrolling in TOTP, nullifying the instance-level two-factor authentication policy. Affected version: <2.5.48

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00315 24th percentileScored 2026-11-07
Fix Fixed MISP (MISP): 2.5.48

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MISPMISPbefore 2.5.482.5.48Patch availableCNA
  • MISP VendorMISP Affected before 2.5.48 Fixed in 2.5.48 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*——MISP
  • cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:* Versions — — ·MISP

Remediation

Upgrade MISP to version 2.5.48, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA MISP (MISP) Fixed in 2.5.48

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    MISP 2.5.48

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-69191 Race condition in MISP email OTP login allows one-time password reusePriority LOW 27
    • TI-2026-69201 MISP sync drops objects and attributes when description is emptyPriority LOW 24
    • TI-2026-69128 MISP correlation engine skips refresh when event sharing changesPriority LOW 23

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-107180
  2. 2026-10-07 CISA SSVC decision points changed
  3. 2026-10-07 Priority changed: MEDIUM → LOW
  4. 2026-10-07 Alias added: GHSA-jgf2-xf9x-w72j

References

  • TI-2025-41517 In MISP before 2.5.28, app/View/Elements/Workflows/executionPath.ctp allows XSS in the workflow execution path. CVSS 3.1CRITICAL 9.0
  • TI-2026-65744 MISP TOTP Code Replay Allows Duplicate Authentication Within Validity Period CVSS 4.0CRITICAL 9.3
  • TI-2026-54145 Path Traversal in MISP Object Template Resolution During STIX Import and Export in misp-stix library CVSS 4.0HIGH 8.8
  • TI-2020-10250 MISP MISP-maltego 1.4.4 incorrectly shares a MISP connection across users in a remote-transform use case. CVSS 3.1CRITICAL 9.8
  • TI-2026-59159 MISP Unauthenticated Mail Endpoints Allow Unbounded Storage Consumption and Request Flooding CVSS 4.0HIGH 8.7
  • TI-2026-58541 MISP LDAP and LinOTP Authentication Bypass via Empty or Invalid Credentials CVSS 4.0CRITICAL 9.5
See all 182 →

Sources