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CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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
Primary rating from Vendor (GitHub_M) · only source for this CVE.
CVSS VectorVendor: GitHub_M
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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
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4DescriptionCVE.org
MISP is an open source threat intelligence and sharing platform. Prior to 2.5.37, MISP Collections did not enforce RFC 4122 UUID validation on the uuid field. As a result, a user able to create or modify Collection records could submit malformed UUID values, potentially causing integrity issues or unexpected behaviour in code paths that assume Collection UUIDs are valid identifiers. This vulnerability is fixed in 2.5.37.
AnalysisAI
Insufficient input validation in MISP's Collections model allows authenticated low-privileged users to inject malformed UUID values into Collection records, potentially causing data integrity issues or unexpected behavior in downstream code paths that assume RFC 4122-compliant UUIDs. Affected deployments are all MISP instances prior to version 2.5.37. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated MISP user account with at minimum low-level privileges sufficient to create or modify Collection records - this maps to the CVSS PR:L (low privileges required) designation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (Medium) reflects a network-reachable vector (AV:N) with low complexity (AC:L) and low privileges required (PR:L), but with only limited integrity impact (VI:L) and no confidentiality or availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated MISP user with Collection create or modify permissions crafts an API or form request that submits a malformed string (e.g., a non-UUID arbitrary string) in the uuid field of a Collection record. The server accepts and persists the invalid value; downstream code paths in MISP that assume Collection UUIDs are valid RFC 4122 identifiers may then behave unexpectedly, potentially corrupting Collection relationships or triggering application errors. … |
| Remediation | Upgrade MISP to version 2.5.37 or later, which introduces RFC 4122 UUID validation in the Collection model via the fix committed at https://github.com/MISP/MISP/commit/f8b20358c3cd8fd3d784452901876f2db0acbf05. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
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EUVD-2026-30166