by Kastro
Paper/Archive/CVE-2026-72575

CVE-2026-72575

daptin daptin — daptin - Authentication Bypass via Null Owner Permission Check on usergroup Objects

EPSS 0.5%CVSS 9.1
critical.is priorityof 100
36
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 44.7.447 × 208.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

An improper authorization vulnerability in daptin through v0.12.34 allows unauthenticated remote attackers to read, create, update, and delete usergroup records. The permission check functions (CanRead, CanPeek, CanCreate, CanUpdate, CanDelete, CanRefer) in server/permission/permission.go return true whenever p.UserId equals the requesting userId, but fail to reject the null/zero reference — unlike CanExecute, which explicitly guards it.

Affected

ProductAffectedFixed inSource
daptin≤ v0.12.34–CNA

Scores by source

TuranSec (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

writeupgithub.com/daptin/daptinwriteupgithub.com/daptin/daptin/blob/master/server/permission/permission.go