CVE-2026-13591

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.

CVSS 4.0

1.3CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

5.0CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS

0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-25)

CWEs

CWE-266, CWE-285

Published

2026-06-29

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

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

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