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CVE-2026-109426— Telegram-Stremio 5.1.0 Insecure Session Storage via encode_string

Quick assessment

Affected
weebzone Telegram-Stremio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Stremio 的 Telegram 插件（版本至 5.1.0 包含该版本）中存在一个不安全的存储漏洞。攻击者若能访问 MongoDB 数据库、备份文件或日志，即可恢复经身份验证的 Telegram 会话字符串。该会话字符串仅通过无密钥的可逆编码变换进行保护，而非采用真正的加密机制。攻击者无需任何秘密密钥，只需将存储的值通过仓库自带的 函数进行逆向解码，即可获取完全受控的 Telegram 会话，从而获得对操作者 Telegram 账户的完全控制权，即使目标账户已启用两步验证（2FA）。

CVSS 7.5 · High EPSS 0.11% · P1

Affected Version Matrix 1

VendorProduct Version RangeStatus
weebzone Telegram-Stremio ≤ 5.1.0 affected
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I. Basic Information for CVE-2026-109426

Vulnerability Information
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Vulnerability Title
Telegram-Stremio 5.1.0 Insecure Session Storage via encode_string
Source: CVE Program / CVE List V5
Vulnerability Description
Telegram-Stremio through 5.1.0 contains an insecure storage vulnerability that allows attackers with access to the MongoDB database, backups, or logs to recover the operator's authenticated Telegram session string, which is protected only by a keyless, reversible encoding transform rather than actual encryption. Attackers can round-trip the stored value through the repository's own decode_string function with no secret key to obtain a fully authenticated Telegram session, granting complete control of the operator's Telegram account even when two-step verification is enabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文存储
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
weebzone Telegram-Stremio 0 ~ 5.1.0 -

II. Public POCs for CVE-2026-109426

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III. Intelligence Information for CVE-2026-109426

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Vendor Advisories for CVE-2026-109426 (1)

Proof of Concept for CVE-2026-109426 (1)

IV. Related Vulnerabilities

Same product: Telegram-Stremio
Same vendor: weebzone
Same weakness: CWE-312

V. Comments for CVE-2026-109426

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