CVE-2026-31875
published 2026-03-11CVE-2026-31875: Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.7 and 8.6.33, when multi-factor…
PriorityP335medium5.9CVSS 3.1
AVNACHPRNUINSUCHINAN
EPSS
0.44%
35.1th percentile
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.7 and 8.6.33, when multi-factor authentication (MFA) via TOTP is enabled for a user account, Parse Server generates two single-use recovery codes. These codes are intended as a fallback when the user cannot provide a TOTP token. However, recovery codes are not consumed after use, allowing the same recovery code to be used an unlimited number of times. This defeats the single-use design of recovery codes and weakens the security of MFA-protected accounts. An attacker who obtains a single recovery code can repeatedly authenticate as the affected user without the code ever being invalidated. This vulnerability is fixed in 9.6.0-alpha.7 and 8.6.33.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| parse-community | parse-server | < 8.6.33 | 8.6.33 |
| parse-community | parse-server | — | — |
| parse-community | parse-server | >= 0 < 8.6.33 | 8.6.33 |
| parse-community | parse-server | >= 9.0.0-alpha.1 < 9.6.0-alpha.7 | 9.6.0-alpha.7 |
| parseplatform | parse-server | < 8.6.33 | 8.6.33 |
| parseplatform | parse-server | — | — |
| parseplatform | parse-server | >= 9.0.0 < 9.6.0 | 9.6.0 |
CVSS provenance
nvdv3.15.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
nvdv4.08.2HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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OSV
Parse Server's MFA recovery codes not consumed after use
osv·2026-03-11
CVE-2026-31875 [HIGH] Parse Server's MFA recovery codes not consumed after use
Parse Server's MFA recovery codes not consumed after use
### Impact
When multi-factor authentication (MFA) via TOTP is enabled for a user account, Parse Server generates two single-use recovery codes. These codes are intended as a fallback when the user cannot provide a TOTP token. However, recovery codes are not consumed after use, allowing the same recovery code to be used an unlimited number of times. This defeats the single-use design of recovery codes and weakens the security of MFA-protected accounts.
An attacker who obtains a single recovery code can repeatedly authenticate as the affected user without the code ever being invalidated.
### Patches
The fix ensures that each recovery code is removed from the stored recovery code list after a successful login.
### Workarounds
The
GHSA
Parse Server's MFA recovery codes not consumed after use
ghsa·2026-03-11
CVE-2026-31875 [HIGH] CWE-672 Parse Server's MFA recovery codes not consumed after use
Parse Server's MFA recovery codes not consumed after use
### Impact
When multi-factor authentication (MFA) via TOTP is enabled for a user account, Parse Server generates two single-use recovery codes. These codes are intended as a fallback when the user cannot provide a TOTP token. However, recovery codes are not consumed after use, allowing the same recovery code to be used an unlimited number of times. This defeats the single-use design of recovery codes and weakens the security of MFA-protected accounts.
An attacker who obtains a single recovery code can repeatedly authenticate as the affected user without the code ever being invalidated.
### Patches
The fix ensures that each recovery code is removed from the stored recovery code list after a successful login.
### Workarounds
The
No detection rules found.
No public exploits indexed.
2026-03-11
Published