PT-2026-104397 · Misp · Misp
CVSS v4.0
7.1
High
| Vector | AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
MISP contains an improper input validation vulnerability in the decaying model import functionality. The import endpoint was intended to create a new decaying model belonging exclusively to the importing user's organisation, with the default flag forced to off.
However, the application stripped only the top-level id and uuid fields and pinned org id and default on the outer array before saving the data flat. A user with decaying-model permissions could supply a nested model key carrying its own primary key, organisation identifier, and default flag, which bypassed those guards during the save operation.
Impact:
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A user with perm decaying could overwrite an existing decaying model belonging to another organisation in place, altering its name, formula, parameters, or ownership.
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A user could create or modify a model flagged as the organisation default, affecting scoring behaviour for other users.
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A user could reassign a model's organisation to an arbitrary value.
Preconditions:
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Authenticated user with decaying-model permission (perm decaying).
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Network access to the MISP instance.
Affected: <2.5.48.
Fix
Improper Authorization
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Related Identifiers
Affected Products
Misp