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CVE-2026-103235 is a mass-assignment vulnerability in MISP's event-delegation feature affecting versions earlier than 2.5.48. The application authorizes a delegation request using the event identified in the URL, but persists the complete submitted delegation record. An authenticated user holding the delegation permission can supply a primary key or event identifier in the request payload to retarget an existing delegation record to an arbitrary event.
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No public exploit code observed for this vulnerability.
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2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An authenticated mass-assignment vulnerability in MISP's event-delegation feature. An attacker with perm_delegate can manipulate submitted delegation-record primary-key or event_id fields to retarget existing delegations, potentially gaining unauthorized access to events owned by other organizations and, if the delegation is accepted, transferring event ownership.
An authenticated mass-assignment vulnerability in MISP's event-delegation feature. An attacker with perm_delegate can manipulate primary-key or event_id fields to overwrite delegation records, gain unauthorized read access to events owned by other organisations, and potentially cause event-ownership transfer if the delegation is accepted.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.