CVSS 4.0
6.3 mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NCVE-2026-33429
Medium (6.3) in parseplatform parse-server. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in parse-server 8.6.54, 9.6.0-alpha.43.
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.
Severity
CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)
- CWE
- CWE-203
- Published
- Modified
- Record from
- the NVD, synced
Affected
- parseplatform:parse-server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qpc3-fg4j-8hgm | npm | parse-server | >=9.0.0 <9.6.0-alpha.43 | 9.6.0-alpha.43 |
| GHSA-qpc3-fg4j-8hgm | npm | parse-server | <8.6.54 | 8.6.54 |
References
- https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b
- https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67
- https://github.com/parse-community/parse-server/pull/10253
- https://github.com/parse-community/parse-server/pull/10254
- https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm