CVE-2026-109426 Telegram-Stremio - Authentication Bypass

Telegram-Stremio through 5.1.0 contains an insecure storage vulnerability caused by reversible encoding of Telegram session strings without encryption, letting attackers with database or backup access recover authenticated sessions, exploit requires access to MongoDB database, backups, or logs.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.11% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
12 October 2026
Updated
15 October 2026
Weakness
CWE-312

Vendor fix

Update to the latest version with proper encryption of session strings.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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