PT-2026-28613 · Npm · Parse Server

Published 2026-03-29 · Updated 2026-03-29 · CVE-2026-34224

OSV

CVSS v4.0

2.1

Low

AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Impact

An attacker who possesses a valid authentication provider token and a single MFA recovery code or SMS one-time password can create multiple authenticated sessions by sending concurrent login requests via the authData login endpoint. This defeats the single-use guarantee of MFA recovery codes and SMS one-time passwords, allowing session persistence even after the legitimate user revokes detected sessions.

Patches

The fix adds optimistic locking to the authData login path, ensuring that concurrent database updates for the same user fail when the original MFA token array has already been modified by another request.

Workarounds

There is no known workaround.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2026-34224

GHSA-W73W-G5XW-RWHF

Affected Products

Parse Server

References · 5

• https://osv.dev/vulnerability/GHSA-w73w-g5xw-rwhf · Vendor Advisory
• https://github.com/parse-community/parse-server · Note
• https://github.com/parse-community/parse-server/pull/10327 · Note
• https://github.com/parse-community/parse-server/security/advisories/GHSA-w73w-g5xw-rwhf · Note
• https://github.com/parse-community/parse-server/pull/10326 · Note