PatchSiren cyber security CVE debrief

CVE-2026-47181 PenguinMod CVE debrief

CVE-2026-47181 is a HIGH-severity vulnerability in PenguinMod-BackendApi, a backend API for PenguinMod. Prior to version 1.0.0, the API was vulnerable to NoSQL injection in its password reset endpoint. This flaw allowed any authenticated user to change the password of any account, potentially leading to full account takeover. An attacker would only need a registered account and a valid password reset token for their own account to exploit this vulnerability.

Vendor: PenguinMod
Product: PenguinMod-BackendApi
CVSS: HIGH 8.7
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-11
Original CVE updated: 2026-06-11
Advisory published: 2026-06-11
Advisory updated: 2026-06-11

Who should care

Users of PenguinMod-BackendApi, especially those hosting the API, should be aware of this vulnerability. Anyone using PenguinMod-BackendApi version prior to 1.0.0 is at risk.

Technical summary

The vulnerability exists in the password reset endpoint of PenguinMod-BackendApi. Due to a lack of proper input validation, an authenticated user can manipulate the NoSQL query used in the password reset process. This allows them to change the password of any account, not just their own, by providing a specially crafted password reset token.

Defensive priority

HIGH

Recommended defensive actions

Upgrade to PenguinMod-BackendApi version 1.0.0 or later, which patches this vulnerability.
Review and secure password reset endpoints in your application to prevent similar vulnerabilities.
Ensure all users with accounts in the system update their passwords and monitor their accounts for suspicious activity.

Evidence notes

The CVE-2026-47181 vulnerability was patched in version 1.0.0 of PenguinMod-BackendApi. The vulnerability was publicly disclosed on [cvePublishedAt].

Official resources

CVE-2026-47181 was published on 2026-06-11T19:16:46.280Z and modified on 2026-06-11T20:58:18.123Z.