What’s Vulnerable › Vulnerabilities

CVE-2026-13591: DeepMyst Mysti Contact Tracking ChannelBridge.ts _isTrackedConversation improper authorization

• Severity: medium (CVSS 5.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-29 · updated 2026-10-25
• Weakness: CWE-266

Description

A weakness has been identified in DeepMyst Mysti 0.4.0. Affected is the function _isTrackedConversation of the file src/managers/ChannelBridge.ts of the component Contact Tracking. This manipulation of the argument _channelType causes improper authorization. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is told to be difficult. The exploit has been made available to the public and could be used for attacks. Patch name: 9b4aff0f106db424aa45a35aa89dd0b8f2eb9a48. It is suggested to install a patch to address this issue.

Affected products

• DeepMyst Mysti: 0.4.0

References

• https://github.com/DeepMyst/Mysti/
• https://github.com/DeepMyst/Mysti/commit/9b4aff0f106db424aa45a35aa89dd0b8f2eb9a48
• https://github.com/DeepMyst/Mysti/issues/42
• https://github.com/DeepMyst/Mysti/pull/43
• https://vuldb.com/cve/CVE-2026-13591
• https://vuldb.com/submit/844480
• https://vuldb.com/vuln/374594
• https://vuldb.com/vuln/374594/cti

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