Vulnerability in Blair2004 NexoPOS

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

NexoPOS through 6.2.4 contains a missing authentication vulnerability that allows unauthenticated attackers to read accounting transaction records via GET /api/fields/{resource}/{identifier}. Attackers can request transaction field classes like ns.entity-transaction with sequential ids to retrieve names, values, account ids, and descriptions without nexopos.read.transactions permission.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/Blair2004/NexoPOS/blob/v6.2.4/app/Providers/FormsProvider.php
• github.com/Blair2004/NexoPOS/blob/v6.2.4/routes/api-base.php
• hackmd.io/@hieuPenguinnn/nexopos-fields-endpoint-unauthenticated-transaction-disclosure
• www.vulncheck.com/advisories/nexopos-through-6.2.4-unauthenticated-transaction-disclosu…