Vulnerability in Parse-Community Parse-Server
CVE-2026-34224
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.64 and 9.7.0-alpha.8, 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. This issue has been patched in versions 8.6.64 and 9.7.0-alpha.8.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.003 (23.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Parse-community Parse-server — versions < 8.6.64, >= 9.0.0, < 9.7.0-alpha.8
- Parseplatform Parse-server — versions 9.7.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-34224?
- CVE-2026-34224 is a medium-severity vulnerability in Parse-Community Parse-Server, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 4.4/10. Published 2026-03-31.
- How severe is CVE-2026-34224?
- Medium severity. CVSS v3 base score is 4.4 out of 10.