CVE-2026-33429Parse Server: Protected field change detection oracle via LiveQuery watch parameter
- 6.3MediumCVSS base score
- 0.34%Exploitation in 30 daysEPSS · top 73% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By GitHub_M
- 5 days later
· 5 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | Medium6.3 | 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 |
| NVDNVD · Analyzed | 4.0 | Medium6.3 | 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 |
- EPSS (exploitation in 30 days)
- 0.34% · top 73% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Affected products
parse-community · parse-server
- affected < 8.6.54
- affected >= 9.0.0, < 9.6.0-alpha.43
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmparse-serverGHSA-qpc3-fg4j-8hgm (opens in a new tab)
References
References5
- https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm (opens in a new tab)x_refsource_CONFIRM
- https://github.com/parse-community/parse-server/pull/10253 (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/pull/10254 (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-14970 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-qpc3-fg4j-8hgm (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-33429)Record last updated .