CVE-2026-86734: Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field
Snipe-IT before 8.7.1 fails to validate the length of the note field in the POST /account/accept/{acceptance} endpoint, allowing authenticated users to submit unbounded input that reaches synchronous CommonMark rendering. Attackers can submit large note values to exhaust PHP worker CPU and cause denial of service through resource exhaustion in the markdown parsing pipeline.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs an authenticated Snipe-IT account with permission to submit a request to the POST /account/accept/{acceptance} endpoint. No user interaction is required.
What is the operational impact of exploitation?
Large note values are processed synchronously by CommonMark rendering, which can consume PHP worker CPU. Repeated or sufficiently large submissions can exhaust worker capacity and deny service to legitimate users.
Which deployments need remediation?
Snipe-IT versions before 8.7.1 are affected. Upgrade to 8.7.1 or later to obtain the note-field length validation.