PT-2026-103097 · Misp · Misp
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N |
MISP contains a mass assignment vulnerability in the event delegation feature. When a user with delegation permission submits a delegation request, the application authorized the user against the event identified in the URL but then persisted the entire submitted record, including caller-supplied fields such as the primary key and event id.
An authenticated attacker could inject a primary key or event id into the delegation payload to retarget an existing delegation record to any event on the instance. Because a delegation row grants the requesting organisation read access to the event it references, this effectively granted read access to arbitrary events belonging to other organisations. If the target organisation subsequently accepted the delegation, ownership of the event was transferred and the original record was deleted.
Preconditions:
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An authenticated user with the delegation permission (perm delegate)
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The MISP.delegation server setting must be enabled
Impact:
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Confidentiality: read access to any event on the instance
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Integrity: overwriting existing delegation records and transferring event ownership
Affected versions: MISP < 2.5.48
Fix
IDOR
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Related Identifiers
Affected Products
Misp