CVE-2026-107276
MISP contains a race condition in the email-based one-time password (OTP) login flow.
Overview
CVE-2026-107276 is a known-severity vulnerability. It was published on October 7, 2026.
Technical description
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
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
References
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Frequently asked questions
What is CVE-2026-107276?
CVE-2026-107276 is a known-severity vulnerability. It was published on October 7, 2026.
How severe is CVE-2026-107276?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-107276?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-107276?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-107276 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.