CVE-2026-33624
Prior to versions 8.6.60 and 9.6.0-alpha.54, an attacker who obtains a user's password and a single MFA recovery code can reuse that recovery code an unlimited number of times by sending concurrent login requests.
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.60 and 9.6.0-alpha.54, an attacker who obtains a user's password and a single MFA recovery code can reuse that recovery code an unlimited number of times by sending concurrent login requests. This defeats the single-use design of recovery codes. The attack requires the user's password, a valid recovery code, and the ability to send concurrent requests within milliseconds. This issue has been patched in versions 8.6.60 and 9.6.0-alpha.54.
- CVSS 4.0
- 2.1 LOWCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.18% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-367
- Affected
- parseplatform/parse-server
- Source
- security-advisories@github.com
References
- https://github.com/parse-community/parse-server/commit/5e70094250a36bfcc14ecd49592be2b94fba66ffPatch
- https://github.com/parse-community/parse-server/commit/fc3da35a81d5083b453e8967cabcc880f1a3bd0cPatch
- https://github.com/parse-community/parse-server/pull/10275Issue Tracking
- https://github.com/parse-community/parse-server/pull/10276Issue Tracking
- https://github.com/parse-community/parse-server/security/advisories/GHSA-2299-ghjr-6vjpVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.