Cloudanix VulnDB

CVE-2026-115932

Critical · 9.6

CVSS

9.6

EPSS

0.4%

Published

Oct 24, 2026

CISA due date

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The record

When a post is published, Postiz treats a media path that is not a web address as a file on the server's disk, but it does not check that the file lies inside the upload directory. A registered user can store a crafted media path with a post, get it past the checks that normally restrict it, and have the publishing worker read an arbitrary file and send it as an attachment to a Discord server the user controls. The same unconfined reads can be reached through two further routes. One tells the caller whether a file exists and can exhaust the backend's memory, the other delivers the file the same way as the main route. Self-registration is open by default, so the attacker needs no existing account.

Affected packages

Ecosystem Package Introduced Fixed

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