CVE-2026-34595

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 83% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.70 and 9.7.0-alpha.18, an authenticated user with find class-level permission can bypass the protectedFields class-level permission setting on LiveQuery subscriptions. By sending a subscription with a $or, $and, or $nor operator value as a plain object with numeric keys and a length property (an "array-like" object) instead of an array, the protected-field guard is bypassed. The subscription event firing acts as a binary oracle, allowing the attacker to infer whether a protected field matches a given test value. This issue has been patched in versions 8.6.70 and 9.7.0-alpha.18.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

March 31, 2026

Last Modified

July 24, 2026

Advisory Details (5)

Auto-updated Jul 26, 2026
Patch available. Sources: github_commit, github_pr, github.
github Patch Available

LiveQuery protected-field guard bypass via array-like logical operator value · Advisory · parse-community/parse-server · GitHub

https://github.com/parse-community/parse-server/security/advisories/GHSA-mmg8-87c5-jrc2
github_pr Patch Available

fix: LiveQuery protected-field guard bypass via array-like logical operator value (GHSA-mmg8-87c5-jrc2)

Patch available: parse-community/parse-server 8.6.81 (PR #10351 merged 2026-03-29)

https://github.com/parse-community/parse-server/pull/10351
github_pr Patch Available

fix: LiveQuery protected-field guard bypass via array-like logical operator value (GHSA-mmg8-87c5-jrc2)

Patch available: parse-community/parse-server 9.9.1-alpha.6 (PR #10350 merged 2026-03-29)

https://github.com/parse-community/parse-server/pull/10350
github_commit Patch Available

commit ffad0ec6b971 (parse-community/parse-server)

Patch available: parse-community/parse-server 8.6.81 (contains commit ffad0ec6b971)

https://github.com/parse-community/parse-server/commit/ffad0ec6b971ee0dd9545e1bf1fb34ddebf275c2
github_commit Patch Available

commit f63fd1a3fe0a (parse-community/parse-server)

Patch available: parse-community/parse-server 9.9.1-alpha.6 (contains commit f63fd1a3fe0a)

https://github.com/parse-community/parse-server/commit/f63fd1a3fe0a7c1c5fe809f01b0e04759e8c9b98

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
parse-server—8.6.70—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 109 total refreshes for this CVE.

  1. 2026-07-26 14:54 UTCEPSS rescore
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  3. 2026-07-26 09:35 UTCEG score recompute
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34595?
CVE-2026-34595 is a medium vulnerability published on March 31, 2026. Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.70 and 9.7.0-alpha.18, an authenticated user with find class-level permission can bypass the protectedFields class-level permission setting on LiveQuery subscriptions. By…
When was CVE-2026-34595 disclosed?
CVE-2026-34595 was first published in the National Vulnerability Database on March 31, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34595 actively exploited?
CVE-2026-34595 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.4% of all scored CVEs.
What is the CVSS score of CVE-2026-34595?
CVE-2026-34595 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-34595?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34595, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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