CVE-2026-33429 json
Parse Server: Protected field change detection oracle via LiveQuery watch parameter
published 2026-03-20 7 mo ago modified 2026-09-08 2 mo ago also BIT-parse-2026-33429 , EUVD-2026-14970 , GHSA-qpc3-fg4j-8hgm
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.
Patch / fix
- npm parse-server 8.6.54, 9.6.0-alpha.43
- bitnami parse 8.6.54, 9.6.0
- parseplatform parse-server 8.6.54, 9.6.0-alpha.43
- parseplatform parse_server 8.6.54, 9.6.0-alpha.43
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| CNA | 4.0 | 6.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/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 |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | parse-server | >=9.0.0, <9.6.0-alpha.43 <8.6.54 |
9.6.0-alpha.43 8.6.54 |
| bitnami | parse | <8.6.54 >=9.0.0, <9.6.0 |
8.6.54 9.6.0 |
Affected products
- parse-community parse-server
Classification
- Weakness
-
- CWE-203 Observable Discrepancy
References
-
github.com
/parse-community/parse-server/pull/10253
web, issue-tracking, report
-
github.com
/parse-community/parse-server/pull/10254
web, issue-tracking, report
-
github.com
/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b
web, patch
-
github.com
/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67
web, patch
-
github.com
/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm
web, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33429
advisory, web
-
github.com
/parse-community/parse-server
package
Sources
- CVE List CVE-2026-33429
- GitHub Advisory GHSA-qpc3-fg4j-8hgm
- NVD CVE-2026-33429
- OSV BIT-parse-2026-33429
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.