GHSA-qpc3-fg4j-8hgm
Parse Server has a protected field change detection oracle via LiveQuery watch parameter
At a glance
- Published
- Updated
- CVE
- CVE-2026-33429
- Aliases
- BIT-parse-2026-33429
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CVSS_V4
- 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
Description
### Impact 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. ### Patches The `watch` parameter is now validated against protected fields at subscription time, mirroring the existing validation for the `where` clause. Subscriptions that include protected fields in `watch` are rejected with a permission error. Master key connections are exempt. ### Workarounds None.
Affected packages
| Package | Versions |
|---|---|
| npm · parse-server | introduced 9.0.0, fixed 9.6.0-alpha.43 |
| npm · parse-server | introduced 0, fixed 8.6.54 |
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-33429 ADVISORY
- https://github.com/parse-community/parse-server/pull/10253 WEB
- https://github.com/parse-community/parse-server/pull/10254 WEB
- https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b WEB
- https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67 WEB
- https://github.com/parse-community/parse-server PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |