CVE-2026-33042
published 2026-03-18CVE-2026-33042: 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.29 and 8.6.49, a user can sign up…
PriorityP431medium5.3CVSS 3.1
AVNACLPRNUINSUCNILAN
EPSS
0.29%
21.1th 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.29 and 8.6.49, a user can sign up without providing credentials by sending an empty `authData` object, bypassing the username and password requirement. This allows the creation of authenticated sessions without proper credentials, even when anonymous users are disabled. The fix in 9.6.0-alpha.29 and 8.6.49 ensures that empty or non-actionable `authData` is treated the same as absent `authData` for the purpose of credential validation on new user creation. Username and password are now required when no valid auth provider data is present. As a workaround, use a Cloud Code `beforeSave` trigger on the `_User` class to reject signups where `authData` is empty and no username/password is provided.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| parse-community | parse-server | < 8.6.49 | 8.6.49 |
| parse-community | parse-server | — | — |
| parse-community | parse-server | >= 0 < 8.6.49 | 8.6.49 |
| parse-community | parse-server | >= 9.0.0 < 9.6.0-alpha.29 | 9.6.0-alpha.29 |
| parseplatform | parse-server | < 8.6.49 | 8.6.49 |
| parseplatform | parse-server | — | — |
| parseplatform | parse-server | >= 9.0.0 < 9.6.0 | 9.6.0 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/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/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 affected by empty authData bypassing credential requirement on signup
ghsa·2026-03-17
CVE-2026-33042 [MEDIUM] CWE-287 Parse Server affected by empty authData bypassing credential requirement on signup
Parse Server affected by empty authData bypassing credential requirement on signup
### Impact
A user can sign up without providing credentials by sending an empty `authData` object, bypassing the username and password requirement. This allows the creation of authenticated sessions without proper credentials, even when anonymous users are disabled.
### Patches
The fix ensures that empty or non-actionable `authData` is treated the same as absent `authData` for the purpose of credential validation on new user creation. Username and password are now required when no valid auth provider data is present.
### Workarounds
Use a Cloud Code `beforeSave` trigger on the `_User` class to reject signups where `authData` is empty and no username/password is provided.
OSV
Parse Server affected by empty authData bypassing credential requirement on signup
osv·2026-03-17
CVE-2026-33042 [MEDIUM] Parse Server affected by empty authData bypassing credential requirement on signup
Parse Server affected by empty authData bypassing credential requirement on signup
### Impact
A user can sign up without providing credentials by sending an empty `authData` object, bypassing the username and password requirement. This allows the creation of authenticated sessions without proper credentials, even when anonymous users are disabled.
### Patches
The fix ensures that empty or non-actionable `authData` is treated the same as absent `authData` for the purpose of credential validation on new user creation. Username and password are now required when no valid auth provider data is present.
### Workarounds
Use a Cloud Code `beforeSave` trigger on the `_User` class to reject signups where `authData` is empty and no username/password is provided.
No detection rules found.
No public exploits indexed.
Wiz
CVE-2026-33042 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 6.9
CVE-2026-33042 [MEDIUM] CVE-2026-33042 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-33042 :
JavaScript vulnerability analysis and mitigation
authData
authData
authData
beforeSave
_User
authData
Source : NVD
## 6.9
Score
Published March 18, 2026
Severity MEDIUM
CNA Score 6.9
Affected Technologies
JavaScript
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 1.4
Exploitation Probability (EPSS) N/A
Affected packages and libraries
parse-server
Sources
NVD
npm Severity MEDIUM Has Fix Added at: Mar 18, 2026
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## Related JavaScript vulnerabilities:
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Severity
Score
Technologies
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CISA KEV ex
Bugzilla
CVE-2025-33042 ceph: Apache Avro Java SDK: Code injection on Java generated code [fedora-42]
bugzilla·2026-02-13·CVSS 7.3
CVE-2025-33042 [HIGH] CVE-2025-33042 ceph: Apache Avro Java SDK: Code injection on Java generated code [fedora-42]
CVE-2025-33042 ceph: Apache Avro Java SDK: Code injection on Java generated code [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, chan
2026-03-18
Published