CVE-2026-30967
published 2026-03-10CVE-2026-30967: Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.9. and 8.6.22, the OAuth2…
PriorityP358high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.33%
25.1th percentile
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.9. and 8.6.22, the OAuth2 authentication adapter, when configured without the useridField option, only verifies that a token is active via the provider's token introspection endpoint, but does not verify that the token belongs to the user identified by authData.id. An attacker with any valid OAuth2 token from the same provider can authenticate as any other user. This affects any Parse Server deployment that uses the generic OAuth2 authentication adapter (configured with oauth2: true) without setting the useridField option. This vulnerability is fixed in 9.5.2-alpha.9. and 8.6.22.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| parse-community | parse-server | < 8.6.22 | 8.6.22 |
| parse-community | parse-server | — | — |
| parse-community | parse-server | >= 0 < 8.6.22 | 8.6.22 |
| parse-community | parse-server | >= 9.0.0-alpha.1 < 9.5.2-alpha.9 | 9.5.2-alpha.9 |
| parseplatform | parse-server | < 8.6.22 | 8.6.22 |
| parseplatform | parse-server | — | — |
| parseplatform | parse-server | >= 9.0.0 < 9.5.2 | 9.5.2 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.07.6HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
Parse Server OAuth2 authentication adapter account takeover via identity spoofing
ghsa·2026-03-11
CVE-2026-30967 [HIGH] CWE-287 Parse Server OAuth2 authentication adapter account takeover via identity spoofing
Parse Server OAuth2 authentication adapter account takeover via identity spoofing
### Impact
The OAuth2 authentication adapter, when configured without the `useridField` option, only verifies that a token is active via the provider's token introspection endpoint, but does not verify that the token belongs to the user identified by `authData.id`. An attacker with any valid OAuth2 token from the same provider can authenticate as any other user.
This affects any Parse Server deployment that uses the generic OAuth2 authentication adapter (configured with `oauth2: true`) without setting the `useridField` option.
### Patches
The vulnerability is fixed by defaulting `useridField` to `sub`, which is the standard subject identifier field defined by [RFC 7662](https://datatracker.ietf.org/doc/h
OSV
Parse Server OAuth2 authentication adapter account takeover via identity spoofing
osv·2026-03-11
CVE-2026-30967 [HIGH] Parse Server OAuth2 authentication adapter account takeover via identity spoofing
Parse Server OAuth2 authentication adapter account takeover via identity spoofing
### Impact
The OAuth2 authentication adapter, when configured without the `useridField` option, only verifies that a token is active via the provider's token introspection endpoint, but does not verify that the token belongs to the user identified by `authData.id`. An attacker with any valid OAuth2 token from the same provider can authenticate as any other user.
This affects any Parse Server deployment that uses the generic OAuth2 authentication adapter (configured with `oauth2: true`) without setting the `useridField` option.
### Patches
The vulnerability is fixed by defaulting `useridField` to `sub`, which is the standard subject identifier field defined by [RFC 7662](https://datatracker.ietf.org/doc/h
No detection rules found.
No public exploits indexed.
2026-03-10
Published