CVE-2026-32248
published 2026-03-12CVE-2026-32248: 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.12 and 8.6.38, an unauthenticated…
PriorityP269critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.63%
45.5th 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.12 and 8.6.38, an unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user identifier (e.g. anonymous authentication). By sending a crafted login request, the attacker can cause the server to perform a pattern-matching query instead of an exact-match lookup, allowing the attacker to match an existing user and obtain a valid session token for that user's account. Both MongoDB and PostgreSQL database backends are affected. Any Parse Server deployment that allows anonymous authentication (enabled by default) is vulnerable. This vulnerability is fixed in 9.6.0-alpha.12 and 8.6.38.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| parse-community | parse-server | < 8.6.38 | 8.6.38 |
| parse-community | parse-server | — | — |
| parse-community | parse-server | >= 0 < 8.6.38 | 8.6.38 |
| parse-community | parse-server | >= 9.0.0 < 9.6.0-alpha.12 | 9.6.0-alpha.12 |
| parseplatform | parse-server | < 8.6.38 | 8.6.38 |
| parseplatform | parse-server | — | — |
| parseplatform | parse-server | >= 9.0.0 < 9.6.0 | 9.6.0 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv4.09.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/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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GHSA
Parse Server: Account takeover via operator injection in authentication data identifier
ghsa·2026-03-12
CVE-2026-32248 [CRITICAL] CWE-943 Parse Server: Account takeover via operator injection in authentication data identifier
Parse Server: Account takeover via operator injection in authentication data identifier
### Impact
An unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user identifier (e.g. anonymous authentication). By sending a crafted login request, the attacker can cause the server to perform a pattern-matching query instead of an exact-match lookup, allowing the attacker to match an existing user and obtain a valid session token for that user's account. Both MongoDB and PostgreSQL database backends are affected. Any Parse Server deployment that allows anonymous authentication (enabled by default) is vulnerable.
### Patches
The fix enforces that the user identifier in authentication data is a string bef
OSV
Parse Server: Account takeover via operator injection in authentication data identifier
osv·2026-03-12
CVE-2026-32248 [CRITICAL] Parse Server: Account takeover via operator injection in authentication data identifier
Parse Server: Account takeover via operator injection in authentication data identifier
### Impact
An unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user identifier (e.g. anonymous authentication). By sending a crafted login request, the attacker can cause the server to perform a pattern-matching query instead of an exact-match lookup, allowing the attacker to match an existing user and obtain a valid session token for that user's account. Both MongoDB and PostgreSQL database backends are affected. Any Parse Server deployment that allows anonymous authentication (enabled by default) is vulnerable.
### Patches
The fix enforces that the user identifier in authentication data is a string bef
No detection rules found.
No public exploits indexed.
2026-03-12
Published