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Query Wrangler EUVDEUVD-2026-63311

| CVE-2026-73992 CRITICAL
Code Injection (CWE-94)
2026-08-20 Patchstack GHSA-9gcp-fwvg-c9v7
9.9
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
9.9 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vuln.today AI
9.9 CRITICAL

Network-reachable, low-complexity code injection needing only a subscriber account (PR:L), yielding RCE that escapes the app to the host (S:C) with full CIA impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Aug 20, 2026 - 12:47 vuln.today
CVE Published
Aug 20, 2026 - 12:07 cve.org
CRITICAL 9.9

DescriptionCVE.org

Subscriber Remote Code Execution (RCE) in Query Wrangler <= 1.5.57 versions.

AnalysisAI

Code injection in the Query Wrangler WordPress plugin (versions <= 1.5.57) lets an authenticated low-privilege user reach remote code execution on the host. Because the CVSS vector requires only PR:L (subscriber-level access) with a scope change and full CIA impact, any site allowing self-registration is exposed to complete server compromise by its lowest-tier accounts. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Register or obtain subscriber account
Delivery
Send crafted request to plugin endpoint
Exploit
Inject code into evaluation sink
Execution
Execute arbitrary code on host
Impact
Full server compromise

Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated account at subscriber level or higher (CVSS PR:L), so the attacker must be able to obtain such an account - trivial on sites with open self-registration, which is the common WordPress default for community/comment features, but a hard blocker on sites that disable registration. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Multiple signals point to genuine priority rather than an inflated CVSS number. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers or obtains a subscriber-level account on a WordPress site running Query Wrangler <= 1.5.57, then sends a crafted request to the vulnerable plugin endpoint that injects code the application evaluates, achieving remote code execution on the server. Because no user interaction is required and complexity is low, the request can be fully scripted once the account exists; no public exploit code is identified at time of analysis.
Remediation No vendor-released patch version is identified in the available data, so a specific 'upgrade to version X' cannot be cited from the input; consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/query-wrangler/vulnerability/wordpress-query-wrangler-plugin-1-5-57-remote-code-execution-rce-vulnerability) for an updated release and apply it as the primary fix once published. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: disable WordPress user self-registration site-wide or immediately deactivate the Query Wrangler plugin to eliminate the attack vector. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-63311 vulnerability details – vuln.today

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