CVE-2026-32242
published 2026-03-12CVE-2026-32242: 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.11 and 8.6.37, Parse Server's…
PriorityP347high7.4CVSS 3.1
AVNACHPRNUINSUCHIHAN
EPSS
0.26%
17.4th 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.11 and 8.6.37, Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent authentication requests for different OAuth2 providers, one provider's token validation may execute using another provider's configuration, potentially allowing a token that should be rejected by one provider to be accepted because it is validated against a different provider's policy. Deployments that configure multiple OAuth2 providers via the oauth2: true flag are affected. This vulnerability is fixed in 9.6.0-alpha.11 and 8.6.37.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| parse-community | parse-server | < 8.6.37 | 8.6.37 |
| parse-community | parse-server | — | — |
| parse-community | parse-server | >= 0 < 8.6.37 | 8.6.37 |
| parse-community | parse-server | >= 9.0.0 < 9.6.0-alpha.11 | 9.6.0-alpha.11 |
| parseplatform | parse-server | < 8.6.37 | 8.6.37 |
| parseplatform | parse-server | — | — |
| parseplatform | parse-server | >= 9.0.0 < 9.6.0 | 9.6.0 |
CVSS provenance
nvdv3.17.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
nvdv4.09.1CRITICALCVSS:4.0/AV:N/AC:H/AT:P/PR:N/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
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OSV
Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance
osv·2026-03-12
CVE-2026-32242 [CRITICAL] Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance
Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance
### Impact
Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent authentication requests for different OAuth2 providers, one provider's token validation may execute using another provider's configuration, potentially allowing a token that should be rejected by one provider to be accepted because it is validated against a different provider's policy.
Deployments that configure multiple OAuth2 providers via the `oauth2: true` flag are affected.
### Patches
The fix ensures that a new adapter instance is created for each provider instead of reusing the singleton, so each provider's configuration is
GHSA
Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance
ghsa·2026-03-12
CVE-2026-32242 [CRITICAL] CWE-362 Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance
Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance
### Impact
Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent authentication requests for different OAuth2 providers, one provider's token validation may execute using another provider's configuration, potentially allowing a token that should be rejected by one provider to be accepted because it is validated against a different provider's policy.
Deployments that configure multiple OAuth2 providers via the `oauth2: true` flag are affected.
### Patches
The fix ensures that a new adapter instance is created for each provider instead of reusing the singleton, so each provider's configuration is
No detection rules found.
No public exploits indexed.
2026-03-12
Published