Missing Authorization Vulnerability in DollarDollar by Harung
CVE-2026-125365

7.1HIGH

Key Information:

Vendor

Harung1993

Status
Dollardollar
Vendor
CVE Published:
9 November 2026

What is CVE-2026-125365?

DollarDollar versions up to 4.4 are susceptible to a missing authorization vulnerability in the add_expense() function. This flaw allows authenticated users to manipulate other users' account balances by providing foreign account_id values. Attackers may exploit this vulnerability by sending crafted requests to the /add_expense endpoint, potentially enabling them to alter balances unlawfully and inject fictitious expenses into arbitrary groups with a designated payer.

Affected Version(s)

dollardollar 0 <= 4.4

References

https://github.com/harung1993/dollardollar/issues/125
issue-tracking
https://github.com/harung1993/dollardollar
product
https://github.com/harung1993/dollardollar/blob/v4.4/app....
technical-description

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.