CVE-2026-66008Network attack vector

Schema metadata disclosure via GraphQL error messages

Published Jul 24, 2026 · Updated Jul 24, 2026

Information disclosure in affected Parse Server releases allows remote attackers to read hidden schema class names through GraphQL errors. The GraphQL error-message sanitizer fails to redact Pointer and Relation target type identifiers from graphql-js validation and input-coercion errors. Exploitation requires a mounted GraphQL API, disabled public introspection, and the public application ID; it exposes class names but not object data or credentials.

CVSS severity6.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in affected Parse Server releases allows remote attackers to read hidden schema class names through GraphQL errors. The GraphQL error-message sanitizer fails to redact Pointer and Relation target type identifiers from graphql-js validation and input-coercion errors. Exploitation requires a mounted GraphQL API, disabled public introspection, and the public application ID; it exposes class names but not object data or credentials.

The record

CVE
CVE-2026-66008
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
Parse Platform
Product
Parse Server
Classifications
CWE-209, T1595
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.2.2 <8.6.87
  2. Affected versionversion=9.0.0 <9.10.0-alpha.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Parse Platform · Parse Serverversion=8.2.2 <8.6.87; version=9.0.0 <9.10.0-alpha.6

Published CVSS scores

6.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
T1595Active Scanning

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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