CVE-2026-42540 is a mass assignment vulnerability in DFIR-IRIS affecting versions up to and including 2.4.27. The application accepts manipulated API parameters and passes request data into object/schema loading logic without strict server-side allowlisting of writable fields. Reported vulnerable paths include /manage/asset-type/update/int:cur_id, /manage/asset-type/add, /user/update, and administrator user-management update functionality. In the asset type workflow, schema loading such as AssetTypeSchema.load(request.form, instance=asset_type) permits unintended modification of backend attributes, including object identifiers. In user-related workflows, crafted requests can modify sensitive properties not intended to be user-controlled via the GUI, including UUIDs, MFA secrets, MFA activation state, service-account status, usernames/logins, and active state. The issue is therefore an improper restriction on dynamically assigned object properties, enabling unauthorized modification of database-backed fields through crafted requests.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
4 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.