Improper Authorization in donetick's History Deletion Handler
CVE-2026-112045

5.3MEDIUM

Key Information:

Vendor

donetick

Status
Donetick
Vendor
CVE Published:
19 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-112045?

A vulnerability exists in donetick's History Deletion Handler in the function CanDeleteHistory, located in internal/chore/model/model.go. This issue allows unauthorized manipulation of the argument AssignedTo, which could lead to inappropriate deletion of history records by users who should not have such permissions. Although the exploit has been made public, it primarily affects trusted members within the same collaboration circles, prompting the maintainer to classify it as a bug. However, it is essential to address this issue to maintain proper security protocols within the application.

Affected Version(s)

donetick 0.1.0

donetick 0.1.1

donetick 0.1.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-112045 - Proof of Concept

References

https://vuldb.com/vuln/421693
vdb-entrytechnical-description
https://vuldb.com/vuln/421693/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-112045
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

geochen (VulDB User)
VulDB CNA Team
.