CVE-2026-107034 LeafPad / Leaf Note - Broken Access Control

LeafPad / Leaf Note v1.21 contains insecure permissions caused by improper access control, letting unauthorized attackers read other users' note data, exploit requires no special privileges.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-284

Vendor fix

Update to the latest version with fixed permissions.

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

← All CVEs