CVE Watch5 ago 2026

CVE-2026-70617

Spacebar Server before commit dcfd910 contains a missing authorization vulnerability that allows any authenticated attacker to add themselve

CVSS

8.1

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 5 ago 2026 · Última mod.: 5 ago 2026 · CWE-862

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Spacebar Server before commit dcfd910 contains a missing authorization vulnerability that allows any authenticated attacker to add themselves to arbitrary group DM channels by sending a PUT request to the channels recipient endpoint without membership verification. Attackers can exploit the unguarded PUT /channels/{channel_id}/recipients/{user_id} handler to join private group DMs, read complete message history, post messages as a participant, and force-add third-party users without their consent.

Referencias oficiales

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