CVE Watch26 de out. de 2026

CVE-2026-109427

Telegram-Stremio through 5.1.0 contains a broken object-level authorization vulnerability that allows authenticated token holders to access

CVSS

6.5

Média

EPSS

0.2%

p11

KEV

—

Exploit Today

0-100

Publicado: 12 de out. de 2026 · Última mod.: 26 de out. de 2026 · CWE-639 · CWE-862

EPSS · 30d

0.2%EPSS · 30 dias0.2%

2026-10-132026-11-06

Descrição técnica

Telegram-Stremio through 5.1.0 contains a broken object-level authorization vulnerability that allows authenticated token holders to access arbitrary chat messages by forging unsigned, unauthenticated stream IDs decoded via encode_string/decode_string functions. Attackers can craft or enumerate sequential msg_id values and set a global flag in the stream_handler endpoint to route requests through the operator's personal Userbot account, exposing private channels, groups, and Saved Messages, while the unauthenticated thumb_handler endpoint further discloses thumbnails from those same chats without any token validation.

Referências oficiais

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