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.
Published: 2026-10-12
Score: 8.2 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 12 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title Telegram-Stremio 5.1.0 Insecure Session Storage via encode_string
Weaknesses CWE-312
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-12T20:34:18.671Z

Reserved: 2026-10-12T15:52:36.681Z

Link: CVE-2026-109426

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-12T21:17:11.310

Modified: 2026-10-12T21:17:11.310

Link: CVE-2026-109426

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-12T21:30:18Z

Weaknesses
  • CWE-312

    Cleartext Storage of Sensitive Information