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GHSA-vwjc-v7x7-cm6g

HighCVSS 8.7 / 10
Published Jul 16, 2026·Last modified Jul 16, 2026
Affected Components(0)

No affected components available

Description

The GHSA-48qw-824m-86pr hardening added a checkPermissionsOnDatabase(UPDATE_SECURITY) gate on the polyglot engine (PolyglotQueryEngine.java:112-114,126,176,199), but only there. The SQL route to JavaScript never touches it: DefineFunctionStatement.executeSimple (DefineFunctionStatement.java:37-100), LocalSchema.registerFunctionLibrary, and SQLQueryEngine library-function invocation (SQLQueryEngine.java:198-224) do no scripting-permission check.

Exploit: any user authorized for the DB (including a read-only role) runs POST /api/v1/command/<db> {"language":"sql","command":"DEFINE FUNCTION x.run "<js>" LANGUAGE js"} then SELECT x.run(), executing arbitrary JavaScript and defeating the control meant to restrict scripting to security admins. On this path allowedPackages is empty so Java.type host lookup and reflection are blocked, but IOAccess.ALL still permits load(url) SSRF/remote-JS inclusion and unbounded CPU/memory DoS.

Fix: gate DefineFunctionStatement.executeSimple, the SQLQueryEngine library-function wrapper (to also cover pre-existing libraries), and DeleteFunctionStatement with UPDATE_SECURITY for js/polyglot languages. Centralize as one assertCanExecuteUserCode(database) invoked by every code-execution surface. Also set IOAccess.NONE / PolyglotAccess.NONE on the Context (GraalPolyglotEngine.java:86,91).

Risk Scores
Base Score
8.7

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
6.3

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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High severity
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