CVE-2026-39901: monetr: Protected Transactions Deletable via PUT

Severity: medium (CVSS 5.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-08 · updated 2026-07-24
Weakness: CWE-285

Description

monetr is a budgeting application focused on planning for recurring expenses. Prior to 1.12.3, a transaction integrity flaw allows an authenticated tenant user to soft-delete synced non-manual transactions through the transaction update endpoint, despite the application explicitly blocking deletion of those transactions via the normal DELETE path. This bypass undermines the intended protection for imported transaction records and allows protected transactions to be hidden from normal views. This vulnerability is fixed in 1.12.3.

Affected products

monetr: before 1.12.3

References

https://github.com/monetr/monetr/security/advisories/GHSA-hqxq-hwqf-wg83

Get alerted when CVE-2026-39901 or the next vulnerability affects your stack